![\"leetcode.cn\"](\"https://i.imgur.com/BcP1dqB.png\"/)
\u575a\u6301\u5728\u505a leetcode \u7684\u6bcf\u65e5\u4e00\u9898(\u4e0d\u53c2\u52a0\u6bd4\u8d5b)\uff0c\u76ee\u524d\u575a\u6301\u4e86 500 \u591a\u5929\uff0c\u9898\u76ee\u5230\u8fbe\u4e86 1000\ud83c\udf89\u3002\n\u638c\u63e1\u4e86\u4e0d\u5c11\u5c0f\u6280\u5de7\uff0c\u4e5f\u5f3a\u5316\u4e86\u81ea\u5df1\u7684\u601d\u8003\u80fd\u529b\u3002
\n\u6211\u4e5f\u770b\u8fc7\u4e4b\u524d\u7684\u5237\u9898\u7684\u5e16\u5b50\uff0chttps://www.v2ex.com/t/910785 \uff0c\u6211\u4e5f\u662f\u89c9\u5f97\u8fd9\u79cd\u5982\u679c\u6ca1\u6709\u989d\u5916\u7684\u9879\u76ee\u53bb\u505a\uff0c\u7ec3\u7ec3\u624b\u4fdd\u6301\u4e00\u4e0b\u611f\u89c9\u4e5f\u662f\u4e0d\u9519\u7684\u3002\n\u53e6\u5916\u8bf4\u4e00\u4e0b\uff0c\u8bbf\u95ee leetcode.com \u9694\u4e00\u6bb5\u65f6\u95f4\u5237\u65b0\u5c31\u4f1a\u8df3\u5230 leetcode.cn \uff0c\u5f88\u70e6\u3002
\n\u9644\u4e0a\u81ea\u5df1\u7684\u94fe\u63a5\ud83d\udc36\nhttps://leetcode.com/u/sudo-rm-maker/
\n", "date_published": "2024-05-03T08:23:50+00:00", "title": "leetcode \u5230\u8fbe 1000 \u9898\u4e86\ud83c\udf89", "id": "https://www.v2ex.com/t/1037553" }, { "author": { "url": "https://www.v2ex.com/member/LFL976", "name": "LFL976", "avatar": "https://cdn.v2ex.com/gravatar/099a694b2e76936fdc4029976a456e1e?s=73&d=retro" }, "url": "https://www.v2ex.com/t/1001497", "date_modified": "2023-12-19T00:24:11+00:00", "content_html": "\u5982\u56fe\n
\u65e0\u8bba\u662f\u79cb\u62db\u6625\u62db\u8fd8\u662f\u65e5\u5e38\u627e\u5de5\u4f5c\uff0c\u90fd\u8981\u8003\u7b97\u6cd5\u3002
\n\u6bcf\u6b21\u6253\u5f00 leetcode \uff0c\u9762\u5bf9\u8fd1\u4e24\u5343\u9053\u9898\u76ee\uff0c\u987f\u65f6\u611f\u89c9\u610f\u4e49\u5168\u65e0\u3002\u6211\u4eec\u4e3a\u4ec0\u4e48\u9700\u8981\u5237\u7b97\u6cd5\u5462\uff0c\u800c\u4e14\u4e3a\u4ec0\u4e48\u8981\u53bb\u5237\u90a3\u4e9b difficult \u96be\u5ea6\u7684\u9898\uff1f
\n", "date_published": "2023-11-14T02:53:26+00:00", "title": "\u4e3a\u4ec0\u4e48\u8981\u5237\u7b97\u6cd5\uff1f", "id": "https://www.v2ex.com/t/991733" }, { "author": { "url": "https://www.v2ex.com/member/xoxo419", "name": "xoxo419", "avatar": "https://cdn.v2ex.com/avatar/cd0f/7a51/233357_large.png?m=1735954016" }, "url": "https://www.v2ex.com/t/990324", "date_modified": "2023-11-09T11:12:21+00:00", "content_html": "![\"912-\u6392\u5e8f\u6570\u7ec4\"](\"https://i.imgur.com/do48QpK.png\"/)
\u4e0d\u6253\u6bd4\u8d5b \u5c31\u662f\u641e\u4e2a\u7fa4\u4e13\u6ce8\u5237\u9898 \u5e73\u65f6\u5439\u5439\u6c34\u804a\u804a\u522b\u7684
\n", "date_published": "2023-10-25T05:24:00+00:00", "title": "Leecode \u7ec4\u961f\u5237\u9898", "id": "https://www.v2ex.com/t/985244" }, { "author": { "url": "https://www.v2ex.com/member/pwonv", "name": "pwonv", "avatar": "https://cdn.v2ex.com/gravatar/387146fff83575f06194852c8994a95e?s=73&d=retro" }, "url": "https://www.v2ex.com/t/984024", "date_modified": "2023-10-21T05:43:48+00:00", "content_html": "leetcode \u5728 2018 \u5e74\u624d\u8fdb\u5165\u4e2d\u56fd\uff0c\u5728\u8fd9\u4e4b\u524d\u56fd\u5185\u7684\u516c\u53f8\u662f\u76f4\u63a5\u4ece leetcode \u82f1\u6587\u7248\u4e0a\u6311\u9762\u8bd5\u9898\u5417\uff1f
\n", "date_published": "2023-10-21T05:13:02+00:00", "title": "2018 \u5e74\u4e4b\u524d\u5927\u5bb6\u600e\u4e48\u51c6\u5907\u7684\u9762\u8bd5\uff1f", "id": "https://www.v2ex.com/t/984024" }, { "author": { "url": "https://www.v2ex.com/member/sugarkeek", "name": "sugarkeek", "avatar": "https://cdn.v2ex.com/avatar/dbe9/73b9/172054_large.png?m=1745726832" }, "url": "https://www.v2ex.com/t/979777", "title": "142. \u73af\u5f62\u94fe\u8868 II \u6211\u8fd9\u4e48\u5199\u4e3a\u4ec0\u4e48\u6709\u4e2a case \u65e0\u6cd5\u901a\u8fc7", "id": "https://www.v2ex.com/t/979777", "date_published": "2023-10-08T03:16:49+00:00", "content_html": "\u611f\u89c9\u4e5f\u6ca1\u5565\u533a\u522b\u5440
\n\u6211\u7684\u4ee3\u7801\uff1a
\npublic class Solution {\n public ListNode detectCycle(ListNode head) {\n if(head == null || head.next == null) return null;\n ListNode fast = head;\n ListNode slow = head;\n while(fast != slow){\n if(fast == null || fast.next == null){\n return null;\n }\n slow = slow.next;\n fast = fast.next.next;\n }\n fast = head;\n while( fast != slow){\n fast = fast.next;\n slow = slow.next;\n }\n return fast;\n }\n}\n\u65e0\u6cd5\u901a\u8fc7\u7684 case:
\n\u8f93\u5165\n[3,2,0,-4]\n1\n\u8f93\u51fa\ntail connects to node index 0\n\u9884\u671f\u7ed3\u679c\ntail connects to node index 1\n\u53ef\u4ee5\u901a\u8fc7\u7684\u4ee3\u7801\uff1a
\npublic class Solution {\n public ListNode detectCycle(ListNode head) {\n if(head == null || head.next == null) return null;\n ListNode fast = head;\n ListNode slow = head;\n while(true){\n if(fast == null || fast.next == null){\n return null;\n }\n slow = slow.next;\n fast = fast.next.next;\n if(fast == slow) break;\n }\n fast = head;\n while( fast != slow){\n fast = fast.next;\n slow = slow.next;\n }\n return fast;\n }\n}\n\u6211\u73b0\u5728\u662f idea+leetcode \u63d2\u4ef6,\u4f46\u662f\u8fd9\u6837\u597d\u50cf\u548c\u76f4\u63a5\u5728\u5b98\u7f51\u5237\u6ca1\u591a\u5927\u533a\u522b
\n\u6709\u6ca1\u6709\u4ec0\u4e48\u65b9\u6848\u53ef\u4ee5\u6709\u4ee3\u7801\u63d0\u793a+\u8865\u5168+\u8c03\u8bd5\u65b9\u4fbf\u7684
\n" }, { "author": { "url": "https://www.v2ex.com/member/yujianwjj", "name": "yujianwjj", "avatar": "https://cdn.v2ex.com/gravatar/1f488ec8d742b28f39e69f9ad297e139?s=73&d=retro" }, "url": "https://www.v2ex.com/t/944226", "title": "leetcode \u7b2c 402 \u9898\uff0c\u79fb\u9664 K \u4f4d\u6570\u5b57 \u7684\u7591\u95ee", "id": "https://www.v2ex.com/t/944226", "date_published": "2023-05-30T07:57:01+00:00", "content_html": "\u8fd9\u9053\u9898\u76ee\u7684\u89e3\u6cd5\u662f \u6bcf\u6b21\u5220\u9664\u4e00\u4e2a\u5b57\u7b26\uff0c\u4f7f\u5269\u4e0b\u7684\u5b57\u7b26\u6700\u5c0f\u3002\u7136\u540e\u6267\u884c k \u6b21\u3002
\n\u8fd9\u9053\u9898\u76ee\u4e3a\u4ec0\u4e48\u8d2a\u5fc3\u7b97\u6cd5\u662f\u6700\u4f18\u89e3\uff1f\u600e\u4e48\u8bc1\u660e\u3002
\n" }, { "author": { "url": "https://www.v2ex.com/member/f9EHtxE2UtX3fG3", "name": "f9EHtxE2UtX3fG3", "avatar": "https://cdn.v2ex.com/gravatar/d687ed6707b9db28331bf61262e8ec71?s=73&d=retro" }, "url": "https://www.v2ex.com/t/913887", "title": "\u4f60\u529b\u6263\u505a\u51e0\u9898\u4e86\uff1f\u505a\u9898\u6570\u8fd8\u80fd\u8861\u91cf\u6c34\u5e73\u5417\uff1f\u6211\u505a\u4e86\u5f88\u591a\u9898\u8fd8\u662f\u5f88\u83dc", "id": "https://www.v2ex.com/t/913887", "date_published": "2023-02-07T04:32:07+00:00", "content_html": "" }, { "author": { "url": "https://www.v2ex.com/member/noyidoit", "name": "noyidoit", "avatar": "https://cdn.v2ex.com/avatar/32e2/2def/269852_large.png?m=1753863065" }, "url": "https://www.v2ex.com/t/888434", "title": "leetcode-cn \u5e74\u8d39\u4f1a\u5458 20%off", "id": "https://www.v2ex.com/t/888434", "date_published": "2022-10-20T06:53:23+00:00", "content_html": "FYI
\n" }, { "author": { "url": "https://www.v2ex.com/member/Knuth", "name": "Knuth", "avatar": "https://cdn.v2ex.com/gravatar/aea488b5566c4ef8fc574e316fb04ef2?s=73&d=retro" }, "url": "https://www.v2ex.com/t/869554", "title": "Leetcode \u5237\u9898\u8bb0\u5f55", "id": "https://www.v2ex.com/t/869554", "date_published": "2022-07-29T13:37:42+00:00", "content_html": "\u8feb\u4e8e...\u9042\u5728\u6b64\u8bb0\u5f55\u82e6\u903c\u5237\u9898\u751f\u6d3b" }, { "author": { "url": "https://www.v2ex.com/member/alexcding", "name": "alexcding", "avatar": "https://cdn.v2ex.com/avatar/459a/3de5/570566_large.png?m=1765659124" }, "url": "https://www.v2ex.com/t/864323", "title": "LeetCode \u6709\u53f2\u4ee5\u6765\u6700\u7b80\u5355\u7684\u9898\u76ee", "id": "https://www.v2ex.com/t/864323", "date_published": "2022-07-05T20:07:25+00:00", "content_html": "https://leetcode.com/problems/add-two-integers/\u6bd4\u5982\u4eca\u5929\u7684\u6bcf\u65e5\u4e00\u9898\uff1a https://leetcode.cn/problems/random-pick-with-blacklist/\uff0c\n\u8fd8\u6709\u8fd9\u4e9b\uff1a https://leetcode.cn/tag/randomized/problemset/
\n\u6bd5\u7adf\u968f\u673a\u7ed3\u679c\u6ca1\u6cd5\u76f4\u63a5\u5bf9\u6bd4\u6807\u51c6\u7b54\u6848\uff0c\u611f\u89c9\u8981\u5224\u65ad\u6b63\u8bef\u5c31\u633a\u9ebb\u70e6\uff0c\u4f46 leetcode \u53ef\u4ee5\u6d4b\u51fa\u6765\u6b63\u786e\u6027\u3002
\n\u6709\u65f6\u5019\u5199\u51fa\u6765\u67d0\u4e2a\u7ec6\u8282\u5dee\u4e2a+1 -1 \uff0c\u90a3\u6982\u7387\u5206\u5e03\u4e5f\u5dee\u4e0d\u592a\u591a\u5427\uff0c\u5b83\u4e5f\u80fd\u6d4b\u51fa\u6765\u6709\u9519\u8bef\u4e0d\u7ed9 AC \u3002\n\u611f\u89c9\u5c31\u633a\u795e\u5947\u7684\u3002
\n\u6ca1\u6709\u641c\u5230\u6709\u5bf9\u8fd9\u4e2a\u7684\u8ba8\u8bba\u3002\u3002
\n" }, { "author": { "url": "https://www.v2ex.com/member/jaggle", "name": "jaggle", "avatar": "https://cdn.v2ex.com/gravatar/4fbd0d76e735c216ba7a35ba2feb90c7?s=73&d=retro" }, "url": "https://www.v2ex.com/t/838310", "title": "\u4f60\u4eec\u4f1a\u5728\u610f\u6267\u884c\u7528\u65f6\u548c\u5185\u5b58\u6d88\u8017\u5417\uff1f", "id": "https://www.v2ex.com/t/838310", "date_published": "2022-03-06T02:18:13+00:00", "content_html": "\u611f\u89c9\u8fd9\u4e2a\u7ed3\u679c\u4e0d\u662f\u5f88\u51c6\uff0c\u56e0\u4e3a\u76f8\u540c\u7b54\u6848\u6bcf\u6b21\u63d0\u4ea4\u53ef\u80fd\u4f1a\u5dee\u522b\u975e\u5e38\u5927\u2026" }, { "author": { "url": "https://www.v2ex.com/member/hehezhang", "name": "hehezhang", "avatar": "https://cdn.v2ex.com/gravatar/0a9c67705a9260a13dfbed500f9bfc2e?s=73&d=retro" }, "url": "https://www.v2ex.com/t/835154", "date_modified": "2022-02-20T03:32:28+00:00", "content_html": "", "date_published": "2022-02-20T02:38:02+00:00", "title": "leetcode 502badgateway \u4e86\uff1f", "id": "https://www.v2ex.com/t/835154" }, { "author": { "url": "https://www.v2ex.com/member/jiezhi", "name": "jiezhi", "avatar": "https://cdn.v2ex.com/avatar/ce96/db34/73760_large.png?m=1770102073" }, "url": "https://www.v2ex.com/t/820137", "title": "\u5f00\u5fc3\uff0c\u53c2\u52a0 Weekly Contest 270 \u4e0d\u5230 1 \u5c0f\u65f6\u89e3\u51b3\u4e86 3 \u9898\uff0c Q3 \u6700\u540e\u51e0\u5341\u79d2\u63d0\u4ea4\u4e00\u6b21\u6027\u901a\u8fc7", "id": "https://www.v2ex.com/t/820137", "date_published": "2021-12-05T04:38:05+00:00", "content_html": "\u4ece 8 \u6708\u4efd\u5f00\u59cb\u5c3d\u91cf\u575a\u6301\u6bcf\u5929\u5237\u9898\uff0c\u6bcf\u5929\u7684\u9898\u76ee\u9664\u4e86 Hard \u4e00\u822c\u4f1a\u8bc6\u76f8\u5730\u653e\u5f03\u5916\uff0cEasy \u548c Medium \u4e00\u822c\u90fd\u4f1a\u5c3d\u91cf\u5b8c\u6210\u3002\u6b64\u5916\u4e5f\u4f1a\u5237 LC \u7684 Explore \u91cc\u7684\u514d\u8d39\u5408\u96c6\u3002\u9898\u76ee: 33. Search in Rotated Sorted Array\n\u4e00\u4e2a\u5f88\u6e05\u6670\u7b80\u6d01\u7684\u89e3\u6cd5: Clever idea making it simple
\nint search(vector<int>& nums, int target) {\n int lo = 0, hi = nums.size();\n while (lo < hi) {\n int mid = (lo + hi) / 2;\n \n double num = (nums[mid] < nums[0]) == (target < nums[0])\n ? nums[mid]\n : target < nums[0] ? -INFINITY : INFINITY;\n \n if (num < target)\n lo = mid + 1;\n else if (num > target)\n // \u8fd9\u513f\u4e3a\u4ec0\u4e48\u4e0d\u80fd -1 ?\n hi = mid;\n else\n return mid;\n }\n return -1;\n}\n\u8fd9\u4e2a\u89e3\u6cd5\u7701\u4e86\u6211\u51e0\u4e07\u4e2a\u8111\u7ec6\u80de, lo = mid + 1 \u5f88\u597d\u7406\u89e3, \u4f46\u662f hi = mid - 1 \u4e3a\u4ec0\u4e48\u51fa\u9519, \u6211\u60f3\u7834\u8111\u888b\u90fd\u6ca1\u60f3\u660e\u767d...
\u5982\u9898
\nleetcode-cn \u7684\u9898\u76ee\u5185\u5bb9\u4ee5\u53ca\u987a\u5e8f\u548c leetcode \u7684\u662f\u5b8c\u5168\u4e00\u6837\u7684\u4e48\uff1f
\n" }, { "author": { "url": "https://www.v2ex.com/member/e583409", "name": "e583409", "avatar": "https://cdn.v2ex.com/avatar/dcc7/2a53/313449_large.png?m=1612692598" }, "url": "https://www.v2ex.com/t/771431", "title": "\u5237\u540c\u4e00\u7c7b\u9898\u578b\u771f\u662f\u5f88\u4e0d\u9519\u7684\u65b9\u6cd5", "id": "https://www.v2ex.com/t/771431", "date_published": "2021-04-18T05:29:44+00:00", "content_html": "\u6bd4\u5982\u6211\u73b0\u5728\u5728\u5237\u4e8c\u5206\u67e5\u627e \u628a\u540c\u7c7b\u578b\u7684\u9898\u76ee\u90fd\u5237\u4e00\u4e0b \u6162\u6162\u5c31\u6709\u611f\u89c9\u4e86" }, { "author": { "url": "https://www.v2ex.com/member/yujianwjj", "name": "yujianwjj", "avatar": "https://cdn.v2ex.com/gravatar/1f488ec8d742b28f39e69f9ad297e139?s=73&d=retro" }, "url": "https://www.v2ex.com/t/769022", "date_modified": "2021-04-08T04:38:06+00:00", "content_html": "https://leetcode.com/problems/minimum-changes-to-make-alternating-binary-string/
\n\u9898\u76ee\u6bd4\u8f83\u7b80\u5355\uff0c\u53ea\u6709 010101... \u6216\u8005 101010... \u4e24\u4e2a\u65b9\u6848\n\u6700\u5f00\u59cb\u6211\u7684\u89e3\u6cd5\u662f\uff1a
\nfunc minOperations(s string) int {\n count1 := 0\n // 010101...\n for i := 0; i < len(s); i++ {\n if int(s[i] - '0') != i % 2 {\n count1++\n }\n }\n count2 := 0\n // 10101010...\n for i := 0; i < len(s); i++ {\n if int(s[i] - '0') != (i+1) % 2 {\n count2++\n }\n }\n return min(count1, count2)\n}\n\u540e\u6765\u53d1\u73b0\u66f4\u7b80\u5355\u4e00\u70b9\u7684
\nfunc minOperations(s string) int {\n count1 := 0\n // 010101...\n for i := 0; i < len(s); i++ {\n if int(s[i] - '0') != i % 2 {\n count1++\n }\n }\n \n return min(count1, len(s)-count1)\n}\n\u6211\u7684\u7591\u95ee\u662f\u5982\u4f55\u7528\u6570\u5b66\u8bc1\u660e\u8fd9\u4e24\u79cd\u65b9\u6848\u52a0\u8d77\u6765\u521a\u597d\u662f s \u7684\u957f\u5ea6\u3002
\n", "date_published": "2021-04-08T04:35:41+00:00", "title": "leetcode 1758", "id": "https://www.v2ex.com/t/769022" }, { "author": { "url": "https://www.v2ex.com/member/e583409", "name": "e583409", "avatar": "https://cdn.v2ex.com/avatar/dcc7/2a53/313449_large.png?m=1612692598" }, "url": "https://www.v2ex.com/t/765686", "title": "3 \u4e2a\u6708 \u4e86 \u5237\u4e86 51 \u9053\u9898 \u5e73\u5747\u6bcf\u9053\u9898 3 \u79cd\u5de6\u53f3\u7684\u65b9\u6cd5", "id": "https://www.v2ex.com/t/765686", "date_published": "2021-03-27T07:41:54+00:00", "content_html": "\u7528\u4e86\u4e09\u4e2a\u6708 \u6211\u5df2\u7ecf\u5237\u4e86 51 \u9898 \u6bcf\u9898\u5927\u6982\u7528\u4e09\u79cd\u65b9\u6cd5\u5b9e\u73b0 https://github.com/xrfinbupt/leetcode_java\u540e\u53f0\u53ef\u80fd\u670d\u52a1\u5668\u8d1f\u8f7d\u4e0d\u4e00\u6837 \u5f71\u54cd\u4e86\u7ed3\u679c?
\n![\"\"](\"https://static01.imgkr.com/temp/74fc78074180400095bb27689b9efe0e.jpeg\"/)
\u63a5\u4e0a\u6b21\u5b8c\u6210 100 \u9898\u7684\u5e16\u5b50(/t/736180)\uff0c\u597d\u5de7\uff0c\u521a\u597d\u8fc7\u4e86 30 \u5929\uff0c1 \u4e2a\u6708\u5237\u4e86 100 \u9898\uff0c\u4e0d\u77e5\u9053\u548c V \u7ad9\u5404\u4f4d\u5927\u4f6c\u6bd4\u7b97\u5982\u4f55\u3002
\n\u8fd9\u6b21\u5237\u7684\u57fa\u672c\u662f\u4e2d\u7b49\u9898\uff0c\u6309\u9898\u76ee\u5217\u8868\u987a\u5e8f\u5237\u7684\uff0c\u8fd8\u662f\u4ee5\u5237\u591f\u91cf\u4e3a\u4e3b\u3002\u60f3\u6cd5\u4e5f\u5f88\u7b80\u5355\uff0c\u91cf\u53d8\u624d\u80fd\u6709\u8d28\u53d8\uff0c\u5148\u6512\u591f\u7ecf\u9a8c\u518d\u8bf4\uff0c\u8fd9\u6837\u540e\u9762\u9047\u5230\u7c7b\u4f3c\u7684\u9898\u4f1a\u6709\u70b9\u5370\u8c61\uff0c\u770b\u9898\u89e3\u4e0d\u4f1a\u592a\u5403\u529b\u3002\u53e6\u5916\u5199\u5237\u9898\u603b\u7ed3\u65f6\u4e5f\u6709\u8db3\u591f\u7684\u6837\u672c\u3002\u529f\u5229\u5fc3\u80af\u5b9a\u4e5f\u662f\u6709\u7684\uff0c\u4e3a\u4e86\u4ee5\u540e\u80fd\u5728\u7b80\u5386\u4e0a\u8d34\u4e2a LeetCode \u4e3b\u9875\u52a0\u52a0\u5206\u3002
\n\u540e\u7eed\u6253\u7b97\u6362\u4e2a\u5237\u9898\u601d\u8def\uff0c\u9664\u4e86\u6bcf\u65e5\u6253\u5361\u548c\u5f3a\u5316\u540c\u7c7b\u9898\u8bad\u7ec3\uff0c\u4e0d\u518d\u5237\u65b0\u9898\u4e86\u3002\u4e00\u662f\u4ee5\u524d\u5237\u8fc7\u7684\u9898\u80af\u5b9a\u5fd8\u5f97\u5dee\u4e0d\u591a\u4e86\uff0c\u9700\u8981\u56de\u5934\u518d\u590d\u4e60\u4e00\u4e0b\uff0c\u4e8c\u662f\u6253\u7b97\u5199\u5199\u5237\u9898\u603b\u7ed3\uff0c\u603b\u7ed3\u4e00\u4e0b\u5178\u578b\u9898\u7684\u5957\u8def\uff0c\u80cc\u4e00\u4e9b\u5e38\u7528\u7684\u4ee3\u7801\uff0c\u4e89\u53d6\u518d\u9047\u5230\u540c\u7c7b\u9898\u65f6\u90fd\u80fd\u505a\u51fa\u6765\u3002\u4e09\u662f\u6253\u7b97\u91cd\u65b0\u5b66\u4e00\u904d\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\uff0c\u548c\u5237\u9898\u603b\u7ed3\u878d\u5408\u5728\u4e00\u8d77\u3002
\n\u76ee\u524d\u4ecd\u7136\u611f\u89c9\u81ea\u5df1\u662f\u4e2a\u83dc\u9e1f\uff0c\u6bd5\u7adf\u56f0\u96be\u9898\u57fa\u672c\u505a\u4e0d\u51fa\uff0c\u4e2d\u7b49\u9898\u5dee\u4e0d\u591a\u4e00\u534a\u4ee5\u4e0a\u8fd8\u8981\u53c2\u8003\u8bc4\u8bba\u6216\u9898\u624d\u80fd\u5199\u5f97\u51fa\u3002
\n\u4e0b\u4e00\u4e2a\u76ee\u6807\uff0c\u660e\u5e74 3 \u6708\u4efd\u5237\u591f 300 \u9898\uff0c\u603b\u7ed3\u51fa\u4e00\u4efd\u5237\u9898\u603b\u7ed3\uff0c\u5305\u542b\u5e38\u89c1\u7684\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\uff0c\u5178\u578b\u9898\u5206\u7c7b\u53ca\u89e3\u9898\u601d\u8def\uff0c\u9898\u76ee\u5217\u8868\u53ca\u6807\u7b7e\u3002
\n\u8fd9\u4e00\u4e24\u5929\u8fd8\u6709\u4e2a\u6253\u7b97\uff0c\u60f3\u6574\u7406\u4e00\u4efd\u8df3\u69fd\u540e\u7aef\u5f00\u53d1\u7684\u77e5\u8bc6\u6e05\u5355\u51fa\u6765\uff0c\u76ee\u524d\u8eab\u5904\u4f20\u7edf\u884c\u4e1a\uff0c\u611f\u89c9\u6ca1\u4ec0\u4e48\u524d\u9014\uff0c\u660e\u5e74\u60f3\u8f6c C++\u6216 Go \u7684\u540e\u7aef\u5f00\u53d1\uff0c\u5230\u65f6\u5019 V \u7ad9\u53d1\u51fa\u6765\u8bf7\u5404\u4f4d\u670b\u53cb\u628a\u628a\u5173\u3002
\n![\"sD0Omj.png\"](\"https://s3.ax1x.com/2021/01/16/sD0Omj.png\"/)
\n![\"sDcK3t.png\"](\"https://s3.ax1x.com/2021/01/16/sDcK3t.png\"/)
![\"s8q37j.png\"](\"https://s3.ax1x.com/2021/01/11/s8q37j.png\"/)
\u4eca\u65e5 LeetCode \u7684\u6bcf\u65e5\u4e00\u9898\uff0c\u4ee3\u7801\u5f88\u7b80\u5355\uff0c\u5b98\u65b9\u7684\u9898\u89e3\u5982\u4e0b\uff1a
\nclass Solution {\n public List<String> summaryRanges(int[] nums) {\n List<String> ret = new ArrayList<String>();\n int i = 0;\n int n = nums.length;\n while (i < n) {\n int low = i;\n i++;\n while (i < n && nums[i] == nums[i - 1] + 1) {\n i++;\n }\n int high = i - 1;\n StringBuffer temp = new StringBuffer(Integer.toString(nums[low]));\n if (low < high) {\n temp.append(\"->\");\n temp.append(Integer.toString(nums[high]));\n }\n ret.add(temp.toString());\n }\n return ret;\n }\n}\n\u53ef\u4ee5\u770b\u5230\u5b98\u65b9\u4f7f\u7528 StringBuffer \u6765\u8fde\u63a5\u5b57\u7b26\u4e32\uff0c\u5728\u4e0d\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u7684\u73af\u5883\uff0c\u6beb\u65e0\u7591\u95ee\u53ef\u4ee5\u4f7f\u7528 StringBuilder \u6765\u4ee3\u66ff\uff0c\u4f46\u662f\u95ee\u9898\u5728\u4e8e\uff0c\u4e3a\u4ec0\u4e48\u4f7f\u7528+\u53f7\u6765\u8fde\u63a5\u7684\u6548\u679c\u4f1a\u6bd4 StringBuilder \u53ca StringBuffer \u5dee\uff1f
\nString temp = Integer.toString(nums[low]);\nif (low < high) {\ntemp += \"->\" + Integer.toString(nums[high]);\n}\nret.add(temp);\n\u4e24\u8005\u7684\u5dee\u522b\u4e3a\uff1a
\nStringBuilder/StringBuffer\uff1a\u6267\u884c\u7528\u65f6\uff1a0 ms, \u5728\u6240\u6709 Java \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e86 100.00%\u7684\u7528\u6237
\n\uff0b\u53f7\u8fde\u63a5\uff1a\u6267\u884c\u7528\u65f6\uff1a8 ms, \u5728\u6240\u6709 Java \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e86 70.02%\u7684\u7528\u6237
\n\u540c\u6837\u7684\u4ee3\u7801\u5728\u672c\u5730\u5404\u5faa\u73af 1000 \u4e07\u6b21\u7684\u7ed3\u679c\u4e3a
\nJDK 1.8(\u4e0e LeetCode \u76f8\u540c)\uff1a7708ms vs 7287ms
\nJDK 11\uff1a7320ms vs 4511ms
\u6628\u5929\u624d\u53d1\u73b0\u7684\u5168\u7ad9\u6392\u540d\u4e0d\u518d\u662f>100000\u4e86\uff0c\u7136\u540e\u6628\u5929\u901a\u8fc7\u4e86\u51e0\u9898\uff0c\u4eca\u5929\u53d1\u73b0\u53c8\u6da8\u4e86\u70b9\uff0c\u4e0d\u9519\u4e0d\u9519\uff0c\u5237\u9898\u8fd9\u79cd\u65e0\u804a\u7684\u4e8b\u60c5\uff0c\u96be\u5f97\u6709\u70b9\u6b63\u53cd\u9988\uff0c\u540e\u9762\u4ee5\u8fd9\u4e2a\u6392\u540d\u4e3a\u76ee\u6807\u4e5f\u53ef\u4ee5\u6fc0\u52b1\u4e00\u4e0b\u81ea\u5df1\uff0c\u76ee\u524d\u6570\u636e\u5982\u4e0b\uff1a\n![\"\u56fe\u50cf](\"https://i.loli.net/2021/01/08/F8WEXVd3DZlOrUq.png\"/)
\u9664\u4e86\u4eca\u65e5\u6253\u5361\u7684\u7b80\u5355\u9898\uff0c\u53e6\u5916\u90fd\u662f\u4e2d\u7b49\u9898\uff0c\u73b0\u5728\u611f\u89c9\u597d\u7d2f\uff0c\u8eab\u4f53\u88ab\u638f\u7a7a\uff0c\u540e\u9762\u51e0\u9898\u5df2\u7ecf\u53d8\u6210\u9762\u5411\u6d4b\u8bd5\u7528\u4f8b\u7f16\u7a0b\u4e86\uff0c\u53ea\u6c42\u63d0\u4ea4\u901a\u8fc7\uff0c\u4f18\u5316\u4ec0\u4e48\u7684\u5b8c\u5168\u6ca1\u5fc3\u601d\uff0c\u6df1\u611f\u4eba\u4e00\u5929\u7684\u7cbe\u529b\u662f\u6709\u9650\u7684\uff0c\u771f\u4e0d\u662f\u610f\u5fd7\u529b\u53ef\u4ee5\u63a7\u5236\u7684\u4e86\uff0c\u8fd9\u51e0\u5929\u8fde\u7eed\u9ad8\u5f3a\u5ea6\u5237\u9898\uff0c\u8111\u5b50\u90fd\u5feb\u4e0d\u591f\u7528\u4e86\u3002\u53e6\u5916\uff0cleetcode \u6700\u8fd1 7 \u5929\u6709 4 \u5929\u7684\u6253\u5361\u9898\u662f\u56f0\u96be\u9898\uff0c\u4e5f\u591f\u641e\u7684\u3002
\n" }, { "author": { "url": "https://www.v2ex.com/member/polymer", "name": "polymer", "avatar": "https://cdn.v2ex.com/gravatar/f383727084e22b5c529c30e8dcefe774?s=73&d=retro" }, "url": "https://www.v2ex.com/t/738841", "date_modified": "2020-12-25T03:30:52+00:00", "content_html": "\u5bf9\u90a3\u4e9b\u201c\u5217\u4e3e\u6240\u6709\u53ef\u80fd\u201d\u7684\u95ee\u9898\uff0c\u975e\u5e38\u5934\u75bc\uff0crecursion \u5199\u5f97\u8001\u662f\u6709\u95ee\u9898\uff0c\u600e\u4e48\u8bbe\u8ba1\u8f85\u52a9\u51fd\u6570\u90fd\u9700\u8981\u60f3\u5f88\u4e45\u3002\u8bf7\u95ee\u5927\u5bb6\u600e\u4e48\u5b66 backtracking \uff1f \u6709\u6ca1\u6709\u63a8\u8350\u7684\u5b66\u4e60\u8d44\u6599\u6216\u8005\u9898\u76ee\u8be6\u7ec6\u8bb2\u89e3\uff1f
\n", "date_published": "2020-12-25T03:29:11+00:00", "title": "\u5927\u5bb6\u89c9\u5f97 backtracking \u96be\u5417\uff1f", "id": "https://www.v2ex.com/t/738841" }, { "author": { "url": "https://www.v2ex.com/member/BarryPan", "name": "BarryPan", "avatar": "https://cdn.v2ex.com/avatar/6602/c580/464837_large.png?m=1696443001" }, "url": "https://www.v2ex.com/t/738366", "title": "\u56fd\u5185\u672c\u79d1\u5b66\u751f\uff0c\u60f3\u95ee\u95ee\u5927\u4f6c\u4eec Leetcode \u63a8\u8350\u7f8e\u56fd\u7ad9\u8fd8\u662f\u56fd\u5185\u7ad9", "id": "https://www.v2ex.com/t/738366", "date_published": "2020-12-23T10:54:35+00:00", "content_html": "\u76ee\u524d\u5927\u4e09\uff0c\u60f3\u5237\u7b97\u6cd5\u9898\uff0c\u82f1\u8bed\u6bd4\u8f83\u666e\u901a\uff08\u516d\u7ea7 500 \u5de6\u53f3\uff09\uff0c\u5e73\u5e38\u4f1a\u770b StackOverflow \u3001Hackernews \u548c\u4e00\u4e9b\u82f1\u8bed\u6587\u7ae0\uff0c\u82f1\u8bed\u535a\u5ba2\uff0c\u82f1\u8bed\u9891\u9053\uff0c\u82f1\u8bed\u65b0\u95fb\u3002\u6709\u610f\u953b\u70bc\u82f1\u8bed\u80fd\u529b\u3002\u6700\u8fd1 Leetcode \u7f8e\u56fd\u7ad9 Premium \u6253\u6298\uff0c\u60f3\u95ee\u95ee\u6211\u8fd9\u79cd\u60c5\u51b5\u5165\u5751\u5e94\u8be5\u9009\u7f8e\u56fd\u7ad9\u8fd8\u662f\u56fd\u5185\u7ad9\u66f4\u597d\u5462\uff1f\nPS.\u6709\u67e5\u8fc7\u76f8\u5173\u5e16\u5b50\u8bf4\u7f8e\u56fd\u7ad9\u7684\u8ba8\u8bba\u8d34\u548c\u9898\u76ee\u76f8\u5bf9\u591a\uff0c\u4e0d\u77e5\u9053\u73b0\u5728\u7684\u60c5\u51b5\u5982\u4f55\u4e86\u3002
\n" }, { "author": { "url": "https://www.v2ex.com/member/6167", "name": "6167", "avatar": "https://cdn.v2ex.com/avatar/4c78/f983/307804_large.png?m=1692323098" }, "url": "https://www.v2ex.com/t/735146", "title": "\u534e\u4e3a OD \u673a\u8bd5\u9898\uff1a\u7ed9\u5b9a\u4e24\u4e2a\u6570 0To celebrate Thanksgiving, we are offering $30 off our annual premium subscription for a total of just $129!
\nRemember to enter the code \"THANKS2020\" at checkout.\nTo take advantage of this limited-time offer, subscribe before 11:59pm PST on Monday, November 30.
\n\u964d\u4ef7$30\uff0c\u56fd\u5185\u4e0d\u6e05\u695a\u3002\u6709\u9700\u8981\u7684\u8bf7\u5c3d\u5feb\u8ba2\u9605\uff5e
\n" }, { "author": { "url": "https://www.v2ex.com/member/tamer", "name": "tamer", "avatar": "https://cdn.v2ex.com/avatar/e3a7/46f0/287664_large.png?m=1652265589" }, "url": "https://www.v2ex.com/t/725628", "title": "\u6c42\u5206\u4eab 416 \u7684\u884d\u751f\u95ee\u9898\u7684\u89e3\u9898\u601d\u8def", "id": "https://www.v2ex.com/t/725628", "date_published": "2020-11-16T01:38:10+00:00", "content_html": "\n\nhttps://leetcode-cn.com/problems/partition-equal-subset-sum/
\n
\u5148\u8d34\u539f\u9898:
\n\n\n\u7ed9\u5b9a\u4e00\u4e2a\u53ea\u5305\u542b\u6b63\u6574\u6570\u7684\u975e\u7a7a\u6570\u7ec4\u3002\u662f\u5426\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u6570\u7ec4\u5206\u5272\u6210\u4e24\u4e2a\u5b50\u96c6\uff0c\u4f7f\u5f97\u4e24\u4e2a\u5b50\u96c6\u7684\u5143\u7d20\u548c\u76f8\u7b49\u3002\n\n\u6ce8\u610f:\n\n\u6bcf\u4e2a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e0d\u4f1a\u8d85\u8fc7 100\n\u6570\u7ec4\u7684\u5927\u5c0f\u4e0d\u4f1a\u8d85\u8fc7 200\n\u793a\u4f8b 1:\n\n\u8f93\u5165: [1, 5, 11, 5]\n\n\u8f93\u51fa: true\n\n\u89e3\u91ca: \u6570\u7ec4\u53ef\u4ee5\u5206\u5272\u6210 [1, 5, 5] \u548c [11].\n\n\u5982[1,1,3]\n\u5373\u5206\u5272\u6210[1][1],3 \u5f03\u7f6e\n\u76ee\u524d\u5c31\u60f3\u5230\u66b4\u529b\u7b97\u6cd5\u590d\u6742\u5ea6 3 \u7684 n \u6b21\u65b9\n,\u6c42\u4e2a\u4f18\u5316\u601d\u8def\u6216\u8005\u66f4\u4f18\u65b9\u6848, \u53bb\u91cd /\u56de\u6eaf\u7684\u526a\u679d\u76ee\u524d\u4e5f\u6ca1\u597d\u7684\u529e\u6cd5
\n" }, { "author": { "url": "https://www.v2ex.com/member/Bechbaliq", "name": "Bechbaliq", "avatar": "https://cdn.v2ex.com/gravatar/027b899c6969d1375c84c4fc71ed9ed9?s=73&d=retro" }, "url": "https://www.v2ex.com/t/720567", "date_modified": "2020-10-31T18:39:18+00:00", "content_html": "\u53ea\u7ed9\u4e86\u6811\u7684\u5b9a\u4e49\uff0c\u5728\u81ea\u5df1\u7684 IDE \u4e0a\u600e\u4e48\u6d4b\u8bd5\uff08javascript\uff09
\nBST, BFS, DFS \u90fd\u6709\u8fd9\u7c7b\u9898\uff0c\u4e0d\u4f1a\u5957\u8f93\u5165\u5c31\u5b8c\u5168\u505a\u4e0d\u4e86
\n\u6c42\u6709\u7ecf\u9a8c\u7684\u8001\u54e5\u6307\u70b9\u4e00\u4e0b
\n", "date_published": "2020-10-31T14:00:58+00:00", "title": "LeetCode \u6709\u5173 \u6811 \u7684\u9898\u5230\u5e95\u600e\u4e48\u5957\u8f93\u5165", "id": "https://www.v2ex.com/t/720567" }, { "author": { "url": "https://www.v2ex.com/member/MintyMentors", "name": "MintyMentors", "avatar": "https://cdn.v2ex.com/gravatar/51d2301eb044598fe41bad2461200161?s=73&d=retro" }, "url": "https://www.v2ex.com/t/715059", "date_modified": "2020-10-14T21:23:45+00:00", "content_html": "\u697c\u4e3b\u76ee\u524d\u51c6\u5907\u8f6c\u7801
\n\u611f\u89c9\u81ea\u5df1\u5237\u9898\u603b\u662f\u4f1a\u52a8\u529b\u4e0d\u8db3\u6216\u8005\u4e09\u5929\u6253\u9c7c\u4e24\u5929\u6652\u7f51
\n\u4e8e\u662f\u8ddf\u51e0\u4e2a\u5c0f\u4f19\u4f34\u5efa\u4e86\u4e00\u4e2a LeetCode \u5237\u9898\u6253\u5361\u7fa4\uff0c\u8fde\u7eed\u6253\u5361\u6709\u5956\u52b1\u7684\u90a3\u79cd\uff01
\n\u611f\u89c9\u5927\u5bb6\u4e00\u8d77\u5237\u9898\u4f1a\u66f4\u6709\u52a8\u529b\u4e00\u70b9~
\n\u7136\u540e\u5982\u679c\u6709\u4e0d\u4f1a\u7684\u95ee\u9898\u6b22\u8fce\u5728\u7fa4\u91cc\u63d0\u95ee\uff0c\u4e5f\u6b22\u8fce\u5e2e\u52a9\u89e3\u7b54\u5176\u4ed6\u4eba\u7684\u95ee\u9898~
\n\u60f3\u5165\u7fa4\u7684\u5c0f\u4f19\u4f34\u53ef\u4ee5\u52a0\u6211\u7684\u5fae\u4fe1 [ evelynxxyy ] \uff0c\u5907\u6ce8 [\u5237\u9898]
\n", "date_published": "2020-10-14T20:33:03+00:00", "title": "\u6709\u6ca1\u6709\u6b63\u5728\u5237 LeetCode \u7684\u5c0f\u4f19\u4f34\u4eec\uff1f", "id": "https://www.v2ex.com/t/715059" }, { "author": { "url": "https://www.v2ex.com/member/hakunamatata11", "name": "hakunamatata11", "avatar": "https://cdn.v2ex.com/avatar/61cf/0701/403151_large.png?m=1595469776" }, "url": "https://www.v2ex.com/t/686763", "title": "\u4e5d\u7ae0\u7b97\u6cd5 | \u5b57\u8282\u8df3\u52a8\u9762\u8bd5\u9898\uff1a\u7528 Rand7()\u5b9e\u73b0 Rand10()", "id": "https://www.v2ex.com/t/686763", "date_published": "2020-07-03T01:59:11+00:00", "content_html": "\u5df2\u6709\u65b9\u6cd5rand7\u00a0\u53ef\u751f\u6210 1 \u5230 7 \u8303\u56f4\u5185\u7684\u5747\u5300\u968f\u673a\u6574\u6570\uff0c\u8bd5\u5199\u4e00\u4e2a\u65b9\u6cd5\u00a0rand10\u751f\u6210 1 \u5230 10 \u8303\u56f4\u5185\u7684\u5747\u5300\u968f\u673a\u6574\u6570\u3002
\u4e0d\u8981\u4f7f\u7528\u7cfb\u7edf\u7684Math.random()\u65b9\u6cd5
rand7\u00a0\u5df2\u5b9a\u4e49\u3002n\u00a0\u8868\u793a\u00a0rand10\u00a0\u7684\u8c03\u7528\u6b21\u6570\u3002\u5728\u7ebf\u8bc4\u6d4b\u5730\u5740\uff1aLintCode \u9886\u6263
\n\u6837\u4f8b 1:
\n\u8f93\u5165\uff1a1\n\u8f93\u51fa\uff1a[7]\n\u6837\u4f8b 2:
\n\u8f93\u5165\uff1a2\n\u8f93\u51fa\uff1a[8,4]\n\u6837\u4f8b 3:
\n\u8f93\u5165\uff1a3\n\u8f93\u51fa\uff1a[8,1,10]\n[\u9898\u89e3]
\n\u8003\u70b9\uff1a
\n\u9898\u89e3\uff1a
\npublic class Solution extends SolBase{\n public int rand10() {\n while(true){\n int rand49 = (rand7() - 1) * 7 + rand7() - 1;\n if(rand49 <= 39) {\n return rand49 / 4 + 1;\n }\n }\n }\n}\n\u66f4\u591a\u8bed\u8a00\u4ee3\u7801\u53c2\u89c1\uff1a\u4e5d\u7ae0\u7b97\u6cd5
\n" }, { "author": { "url": "https://www.v2ex.com/member/longSwordMan", "name": "longSwordMan", "avatar": "https://cdn.v2ex.com/gravatar/d3ba49dcd4ccb61b085e7dc65625f061?s=73&d=retro" }, "url": "https://www.v2ex.com/t/684406", "title": "\u957f\u6587\u614e\u70b9\uff01 Kaggle \u6bd4\u8d5b\u7684 top2%\u548c\u91d1\u724c\u5230\u5e95\u5dee\u8ddd\u6709\u591a\u5927\uff1f", "id": "https://www.v2ex.com/t/684406", "date_published": "2020-06-24T04:02:05+00:00", "content_html": "\u5165\u4e86 kaggle \u8fd9\u4e2a\u5751\u4e09\u5e74\uff0c\u6210\u7ee9\u8fd8\u51d1\u5408\uff0c\u76ee\u524d\u62ff\u5230\u4e00\u91d1\u4e8c\u94f6\u4e8c\u94dc\uff0c\u4e5f\u548c\u7efc\u5408\u6392\u540d top10 \u7684\u79cd\u5b50\u9009\u624b\u7ec4\u8fc7\u961f\u3002
\n\u6b22\u8fce\u5728\u8ba8\u8bba\u533a\u4ea4\u6d41\uff0c\u4e5f\u6b22\u8fce\u6dfb\u52a0\u5fae\u4fe1 longswordMAN \u8fdb\u7fa4+\u542c\u76f4\u64ad\u5206\u4eab\uff0c\u52a0\u7684\u65f6\u5019\u6ce8\u660e V2EX \u7684 id \u5c31\u884c\u3002
\n\u6211\u4f1a\u5c3d\u91cf\u4fdd\u6301\u5468\u66f4\u7684\u9891\u7387\uff0c\u6bcf\u6761\u8bc4\u8bba\u4e5f\u4f1a\u770b\uff0c\u6bd4\u8f83\u8d70\u5fc3\u7684\u9ad8\u8d28\u91cf\u8bc4\u8bba\u5fc5\u56de\uff0c\u770b\u53cd\u9988\u60c5\u51b5\u51b3\u5b9a\u662f\u5426\u6539\u53d8\u66f4\u65b0\u9891\u7387\u3002
\n\u5e16\u5b50\u4e3b\u8981\u8c08\u4e09\u4e2a\u4e3b\u9898\uff1a
\n1.kaggle \u7684\u6bd4\u8d5b\u51b2\u5206\u6280\u5de7\u3002\u5728\u5177\u5907 top10%\u4e43\u81f3 top2%\u7684\u5b9e\u529b\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u4f55\u767e\u5c3a\u7aff\u5934\u66f4\u8fdb\u4e00\u6b65\uff0c\u51b2\u51fb\u5956\u724c\uff0c \u4ee5\u53ca\u5982\u4f55\u9009\u62e9\u9002\u5408\u81ea\u5df1\u7684\u9879\u76ee\u3002
\n2.\u5728\u7b80\u5386\u91cc\u600e\u4e48\u5305\u88c5\u9879\u76ee\uff0c\u9762\u8bd5\u7684\u65f6\u5019\u600e\u4e48\u5c55\u793a\uff0c
\n3.\u600e\u4e48\u901a\u8fc7 kaggle \u6765 networking\uff0c\u4ee5\u6587\u4f1a\u53cb\uff0c\u5efa\u7acb\u4eba\u8109\u7f51\u7edc\u3002
\n\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u6b63\u9898\u5f00\u59cb\u3002
\n\u60f3\u8981\u5728 kaggle \u5e73\u53f0\u5236\u9738\uff0c\u6211\u4eec\u9996\u5148\u8981\u4e86\u89e3 kaggle \u7684\u524d\u4e16\u4eca\u751f\uff0c\u4e86\u89e3\u4ed6\u6bd4\u8d5b\u7684\u98ce\u683c\u548c\u6700\u8fd1\u51e0\u5e74\u7684\u53d8\u5316\u65b9\u5411\u3002
\nKaggle \u662f\u4e00\u4e2a\u5bf9\u7ed9\u5b9a\u6570\u636e\u96c6\u7684\u7684\u6570\u636e\u5efa\u6a21\u5e73\u53f0\uff0c\u4ee5\u5206\u7c7b\u3001\u56de\u5f52\u95ee\u9898\u4e3a\u4e3b\uff08\u4e5f\u6709\u5c11\u8bb8\u805a\u7c7b\uff0c\u6211\u4e2a\u4eba\u4f30\u8ba1\u5e94\u8be5\u662f\u56e0\u4e3a\u805a\u7c7b\u6a21\u578b\u7684\u8868\u73b0\u8861\u91cf\u8d77\u6765\u76f8\u5bf9\u9ebb\u70e6\uff0c\u4ee5\u540e\u5982\u679c\u6709\u65f6\u95f4\uff0c\u53ef\u4ee5\u5f00\u4e00\u4e2a\u4e13\u9898\u8bb2\u805a\u7c7b\uff0c\u73b0\u5728\u56e0\u4e3a\u548c\u4e3b\u7ebf\u6709\u70b9\u504f\u79bb\uff0c\u5148\u6309\u4e0b\u4e0d\u8868\uff09\u3002
\nKaggle \u7ade\u8d5b\u7684\u5408\u4f5c\u65b9\uff0c\u65e9\u671f\u53ef\u4ee5\u8ba4\u4e3a\u662f\u60ac\u8d4f\u65b9\uff0c\u63d0\u4f9b\u6570\u636e\u548c\u4efb\u52a1\uff0c\u5f80\u5f80\u662f\u516c\u53f8\u5185\u90e8\u6570\u636e\uff08\u5f53\u7136\u4f5c\u4e86\u4e00\u4e9b\u53bb\u654f\uff09\uff0c\u8fdb\u800c\u63d0\u51fa\u516c\u53f8\u4e00\u4e2a\u5b9e\u9645\u9700\u8981\u89e3\u51b3\u7684\u95ee\u9898\u3002\u8fd9\u4e2a\u6a21\u5f0f\u6709\u4e00\u4e9b\u7c7b\u4f3c\u8d4f\u91d1\u730e\u4eba\uff0c\u5c24\u5176\u662f\u5728 2010 \u5e74\u524d\u540e\uff0ckaggle \u8fd8\u6bd4\u8f83\u5c0f\u4f17\u7684\u65f6\u5019\uff0c\u53c2\u8d5b\u4eba\u6570\u4e0d\u591a\uff0c\u5982\u679c\u4e0d\u662f\u91d1\u989d\u7279\u522b\u7206\u70b8\u7684\u60ac\u8d4f\uff0c\u4e0d\u662f\u7cbe\u5fc3\u96d5\u7422\u7684\u6a21\u578b\u5f80\u5f80\u4e5f\u80fd\u778e\u6253\u4e71\u649e\u62ff\u5230\u5956\u91d1\u3002
\n\u867d\u7136\u4e00\u5f00\u59cb kaggle \u7684\u521d\u8877\u6709\u4e00\u4e9b\u7c7b\u4f3c\u4e8e\u8d4f\u91d1\u730e\u4eba\uff0c\u4f46\u662f\u968f\u7740\u5e73\u53f0\u7684\u58ee\u5927\uff0c\u5355\u7eaf\u7684\u53bb\u51b2\u51fb\u5956\u91d1\u7684\u671f\u671b\u6536\u76ca\u5df2\u7ecf\u5927\u5927\u964d\u4f4e\uff0c\u6240\u4ee5 kaggle \u5e73\u53f0\u6162\u6162\u5c31\u6f14\u53d8\u6210\u4e86\u73b0\u5728\u7c7b\u4f3c\u7ade\u8d5b\u5e73\u53f0\u7684\u5f62\u5f0f\u3002\u5c24\u5176\u662f\u5728\u88ab Google \u6536\u8d2d\u4e4b\u540e\uff0ckaggle \u4e0a\u7684\u9898\u76ee\u98ce\u683c\u53d1\u751f\u4e86\u4e0d\u5c0f\u7684\u53d8\u5316\uff0c\u6982\u62ec\u8d77\u6765\u5c31\u662f\u4e24\u591a\u4e24\u5c11\u3002
\n\u4e24\u591a\uff1a
\n\u53c2\u8d5b\u961f\u4f0d\u53d8\u591a
\n\u6df1\u5ea6\u5b66\u4e60\u6a21\u578b\u53d8\u591a
\n\u4e24\u5c11\uff1a
\n\u6570\u636e\u91cf\u53d8\u5c0f
\n\u6bd4\u8d5b\u6570\u91cf\u53d8\u5c11
\n" }, { "author": { "url": "https://www.v2ex.com/member/longSwordMan", "name": "longSwordMan", "avatar": "https://cdn.v2ex.com/gravatar/d3ba49dcd4ccb61b085e7dc65625f061?s=73&d=retro" }, "url": "https://www.v2ex.com/t/684037", "title": "\u5fae\u8f6f\u9762\u8bd5\u771f\u9898+\u9762\u8bd5\u5b98\u6539\u7f16 leetcode \u601d\u8def\uff08\u54c8\u5e0c\u7bc7-\u52a0\u66f4\uff09", "id": "https://www.v2ex.com/t/684037", "date_published": "2020-06-23T03:32:12+00:00", "content_html": "\u7531\u4e8e\u5e16\u5b50\u7684\u7bc7\u5e45\u6240\u9650\uff0c\u6211\u4eec\u4f1a\u5bf9\u6bcf\u4e00\u4e2a\u5206\u7c7b\u90fd\u63d0\u53ca\uff0c\u5982\u679c\u60f3\u6df1\u6316\u4e14\u65f6\u95f4\u5145\u88d5\u7684\u540c\u5b66\u53ef\u4ee5\u62a5\u4e00\u4e0b\u6211\u7684\u8bfe\uff0c\u6211\u603b\u7ed3\u4e86\u5341\u7c7b\u6539\u7f16\u9898\uff0c\u6bcf\u4e00\u7c7b\u90fd\u6709\u591a\u4e2a\u6539\u7f16\u7684\u6848\u4f8b\uff0c\u4e00\u7c7b\u9700\u8981\u56db-\u4e94\u4e2a\u5c0f\u65f6\u7684\u94bb\u7814\u3002
\n\u6211\u4eec\u8fd9\u91cc\u56de\u8fc7\u5934\u6700\u540e\u518d\u8bf4\u4e00\u4e2a\u54c8\u5e0c\u7684\u6539\u7f16\u6848\u4f8b\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u8981\u8bf4 array \u548c linked list \u8fd9\u5bf9\u76f8\u7231\u76f8\u6740\u7684\u5144\u5f1f\u3002
\n\u6211\u4eec\u63a5\u7740\u6765\u770b\u4e00\u4e2a\u54c8\u5e0c\u8868\u7684\u4f8b\u5b50\uff1a\u8001\u89c4\u77e9\uff0c\u5148\u4e0a\u539f\u9898\uff1a
\n\u7ed9\u5b9a string \u6570\u7ec4\u628a\u6240\u6709\u201c\u540c\u6784\u8bcd\u201d\u805a\u5728\u4e00\u8d77\u3002
\n\u4f8b\uff1a [\"eat\", \"tea\", \"tan\", \"ate\", \"nat\", \"bat\"],\n\u8fd4\u56de:\n[
\n[\"ate\", \"eat\",\"tea\"],
\n[\"nat\",\"tan\"],
\n[\"bat\"]\n]
\u8bf4\u660e\uff1a\u5982\u679c\u4e24\u4e2a\u5355\u8bcd\u6240\u7ec4\u6210\u7684\u5b57\u6bcd\u5b8c\u5168\u76f8\u540c\uff0c\u53ea\u662f\u5b57\u6bcd\u4f4d\u7f6e\u4e0d\u540c\uff0c\u6211\u4eec\u53eb\u5b83\u4eec anagrams \u3002\u9996\u5148\u6211\u4eec\u51b7\u9759\u5206\u6790\u4e00\u4e0b\uff0c\u65e2\u7136\u662f\u7528\u54c8\u5e0c\u8868\uff0c\u4e00\u5b9a\u8981\u6709\u9002\u5408\u505a key \u7684\u5143\u7d20\u3002\u90a3\u4e48\u9700\u8981\u627e\u5230\u9002\u5408\u7684 key\uff0c\u5e94\u8be5\u600e\u4e48\u53bb\u505a\u5462\uff1f\u6211\u4eec\u89c2\u5bdf\u4e00\u4e0b,\"tea\" \u548c\u201cate\u201d\u53ea\u662f\u5b58\u5728\u987a\u5e8f\u7684\u533a\u522b\uff0c\u6700\u7ec8\u8fd9\u4e24\u4e2a\u5355\u8bcd\u80fd\u591f\u88ab\u6620\u5c04\u5230\u540c\u6837\u7684\u201d\u540c\u6784\u8bcd\u201c\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u7684 group \u9700\u6c42\uff0c\u628a anagram \u5168\u51d1\u8d77\u6765\uff0c\u6211\u4eec\u5728\u6bcf\u6b21\u54c8\u5e0c\u524d\uff0c\u628a\u5b57\u6bcd\u6392\u4e2a\u5e8f\uff0c\u90a3\u4e48\u6240\u6709 anagram \u7684\u54c8\u5e0c\u503c\u5c31\u4f1a\u4e00\u6837\u3002\u6211\u4eec\u7528 string \u505a key\uff0c\u4e0d\u8fc7\u9700\u8981\u5c06 key \u6392\u5e8f\u540e\u7684\u7ed3\u679c\u5f53 key\uff0c\u5f97\u89e3\u3002
\n" }, { "author": { "url": "https://www.v2ex.com/member/longSwordMan", "name": "longSwordMan", "avatar": "https://cdn.v2ex.com/gravatar/d3ba49dcd4ccb61b085e7dc65625f061?s=73&d=retro" }, "url": "https://www.v2ex.com/t/683702", "date_modified": "2020-06-22T04:17:32+00:00", "content_html": "\u5728\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e0e\u5927\u5bb6\u5206\u4eab\u4e86\u52a8\u6001\u89c4\u5212\u7bc7\uff0c\u4eca\u5929\u60f3\u7ee7\u7eed\u8ddf\u5927\u5bb6\u63a2\u8ba8\u4e00\u4e0b\u94fe\u8868\u7bc7\u3002
\n\u94fe\u8868\u662f\u4e00\u4e2a\u975e\u5e38\u7ecf\u5178\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4f46\u662f\u4e5f\u975e\u5e38 tricky\uff0c\u800c\u4e14\u5e38\u89c1\u7684\u662f\u4ee4\u4eba\u864e\u8eaf\u4e00\u9707\u7684\u7a7a\u95f4 in place \u8981\u6c42\uff0c\u7531\u4e8e\u94fe\u8868\u7684\u4e00\u4e9b\u7279\u6b8a\u6027\u8d28\uff0c\u7ecf\u5e38\u4f1a\u4f5c\u4e3a\u4e00\u4e2a\u9762\u8bd5\u8003\u5bdf\u7684\u91cd\u70b9\u3002
\n\u6211\u4eec\u5148\u770b\u4e00\u4e2a\u539f\u9898\uff1a\n\u4ece\u5df2\u6392\u5e8f\u7684\u94fe\u8868\u4e2d\u79fb\u9664\u91cd\u590d\u7684\u5355\u5143\uff0c\u5982\n1->1->2, \u8fd4\u56de 1->2.\n1->1->2->3->3, \u8fd4\u56de 1->2->3
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\n\u6539\u7f16\u9898 1\uff1a\n\u7ed9\u5b9a\u6709\u5e8f\u94fe\u8868\uff0c\u5982\u679c\u67d0\u5143\u7d20\u51fa\u73b0\u4e09\u6b21\u4ee5\u4e0a\u7684\uff0c\u5220\u9664\u8be5\u5143\u7d20\uff0c1->1->2->3->3->3, \u8fd4\u56de 1->1->2\n\u6211\u4eec\u4ecd\u7136\u53ef\u4ee5\u53cc\u6307\u9488\uff0c\u5982\u679c\u6570\u503c\u4e0d\u540c\uff0c\u5feb\u6162\u6307\u9488\u5404\u8d70\u4e00\u6b65 \u9047\u5230\u76f8\u540c\u6570\u503c\uff0c\u5feb\u6307\u9488\u7ee7\u7eed\u8d70\uff0c\u540c\u65f6\u8ba1\u6570\uff0c\u8d85\u8fc7\u4e09\u6b21\u5c31\u63a5\u7740\u5f80\u540e\uff0c\u78b0\u5230\u65b0\u6570\u5b57\u540e\u4fee\u6539\u6162\u6307\u9488\u7684 next \u3002
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\n\u6539\u7f16\u9898 3\uff1a\n\u65e0\u5e8f\u94fe\u8868\uff0c\u4f46\u5982\u679c\u8981\u6c42\u91cd\u590d\u5143\u7d20\u7684\u4e2a\u6570\u4e0d\u8d85\u8fc7\u81ea\u8eab\u7684 value \u5462\uff0c\u6bd4\u5982\uff1a1-> 1-> 2->3->2->2 \u6539\u6210\uff1a1 - 2 - 3 - 2\n\u8fd8\u662f\u7528\u54c8\u5e0c\uff0c\u53ea\u4e0d\u8fc7\u9700\u8981\u5398\u6e05\u51e0\u4e2a\u503c\u7684\u5173\u7cfb\uff0c\u8be5 map\uff1akey \u662f\u94fe\u8868\u7684 value\uff0cvalue \u662f\u94fe\u8868 value \u51fa\u73b0\u7684\u9891\u6b21\u3002\u5faa\u73af\u7684\u65f6\u5019\uff0c\u7b2c\u4e00\u6b21\u904d\u5386\u7edf\u8ba1\u9891\u6b21\uff0c\u7b2c\u4e8c\u6b21\u904d\u5386\uff0c\u5982\u679c map \uff08 node.val \uff09> node.val \uff0c\u5220\u4e00\u4e2a\u8282\u70b9\uff0c\u5e76\u4e14\u540c\u65f6 map \u4e2d\u7684 node.val \u503c\u51cf\u4e00\uff0c\u7b97\u6cd5\u65f6\u95f4\u590d\u6742\u5ea6 O \uff08 n \uff09\uff0c\u7a7a\u95f4 O \uff08 n \uff09\u5f97\u89e3\u3002
\n\u5176\u4ed6\u63a8\u8350\u539f\u9898\uff1a\n\u4e24\u94fe\u8868\u4ea4\u53c9\u70b9\u95ee\u9898\n\u94fe\u8868\u73af\u95ee\u9898\n\u94fe\u8868 merge sort \u95ee\u9898
\n\u8fd9\u51e0\u4e2a\u7ecf\u5178\u539f\u9898\u539f\u9898\u7684\u6539\u53d8\u6211\u4e4b\u540e\u5728\u6211\u7684\u8354\u679d\u5fae\u8bfe\u76f4\u64ad\u95f4\u90fd\u4f1a\u63d0\u53ca\u3002\n\u53ef\u4ee5\u52a0\u5fae\u4fe1 longswordMAN \u8fdb\u7fa4+\u542c\u76f4\u64ad\uff0c\u6ce8\u660e V2EX \u7684 id \u5373\u53ef\u3002
\n", "date_published": "2020-06-22T04:16:42+00:00", "title": "\u5fae\u8f6f\u9762\u8bd5\u771f\u9898+\u9762\u8bd5\u5b98\u6539\u7f16 leetcode \u601d\u8def\uff08\u94fe\u8868\u7bc7\uff09", "id": "https://www.v2ex.com/t/683702" }, { "author": { "url": "https://www.v2ex.com/member/longSwordMan", "name": "longSwordMan", "avatar": "https://cdn.v2ex.com/gravatar/d3ba49dcd4ccb61b085e7dc65625f061?s=73&d=retro" }, "url": "https://www.v2ex.com/t/682252", "date_modified": "2020-06-17T02:38:52+00:00", "content_html": "\u5728\u4e0a\u4e00\u4e2a\u5e16\u5b50\u4e3b\u8981\u548c\u5927\u5bb6\u5206\u4eab\u4e86\u5237 leetcode \u7684\u6b63\u786e\u59ff\u52bf\uff0c\u6536\u5230\u4e86\u5f88\u4e0d\u9519\u7684\u53cd\u9988\uff0c\u6240\u4ee5\u5e94\u9080\u7ee7\u7eed\u7ed9\u5927\u5bb6\u8fdb\u884c\u6df1\u5165\u7684\u4e13\u680f\u5206\u4eab\u3002\u4eca\u5929\u4e3b\u8981\u662f\u52a8\u6001\u89c4\u5212\u7bc7\uff0c\u63a5\u4e0b\u6765\u8fd8\u4f1a\u9646\u7eed\u66f4\u65b0\u94fe\u8868\u7bc7\uff0c\u54c8\u5e0c\u7bc7\u7b49\uff0c\u5927\u5bb6\u53ef\u4ee5\u5173\u6ce8\u4e00\u4e0b\u3002\u5982\u679c\u5728\u6b64\u8fc7\u7a0b\u4e2d\u6709\u95ee\u9898\u5e0c\u671b\u80fd\u591f\u4e0e\u6211\u6df1\u5165\u63a2\u8ba8\uff0c\u53ef\u4ee5\u6dfb\u52a0\u5fae\u4fe1 longswordMAN \u8fdb\u884c\u4ea4\u6d41\u3002\u90a3\u6211\u4eec\u8bdd\u4e0d\u591a\u8bf4\uff0c\u5f00\u59cb\u6211\u4eec\u7684\u52a8\u6001\u89c4\u5212\u4e13\u9898\u8bb2\u89e3\u3002
\n\u5927\u5382\u9762\u8bd5\u4e00\u822c\u4e0d\u4f1a\u53ea\u8003\u5bdf\u5355\u7eaf\u7684\u54c8\u5e0c\u67e5\u8868\uff0c\u800c\u662f\u4f1a\u7ed3\u5408\u66f4\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u6765\u8003\u6216\u8005\u7f8e\u5176\u540d\u66f0\u52a8\u6001\u89c4\u5212\u3002\u5148\u4ece\u7b80\u5355\u7684\u8bf4\uff0c\u770b\u5b8c\u4e4b\u540e\u4f60\u4f1a\u89c9\u5f97\u52a8\u6001\u89c4\u5212\u4e5f\u5c31\u662f\u90a3\u6837\uff0c\u4e4b\u524d\u201c\u754f DP \u5982\u864e\u201d\u7684\u5fc3\u6001\u5b8c\u5168\u6ca1\u6709\u5fc5\u8981\u3002
\n\u8a00\u5f52\u6b63\u4f20\uff0c\u5148\u770b\u9898\uff1a\u7ed9\u5b9a\u6574\u6570\u6570\u5217 nums, \u627e\u5230\u8fde\u7eed\u548c\u6700\u5927\u7684\u5b50\u6570\u5217\uff0c\u5e76\u8fd4\u56de\u6570\u5217\u548c\u548c\u3002
\n\u4e3e\u4e2a\u4f8b\u5b50\uff1a\nInput: [-2,1,-3,4,-1,2,1,-5,4],\nOutput: 6\n\u5176\u4e2d[4,-1,2,1]\u52a0\u8d77\u6765\u4e3a 6 \u3002
\n\u8fd8\u662f\u8001\u5957\u8def\uff0c\u4e00\u4e2a\u89d2\u6807\u53d8\u4e24\u4e2a\u89d2\u6807\u800c\u5df2\uff0c\u548c\u4e0a\u9898\u4e00\u6837\uff0c\u66b4\u529b\u4e24\u91cd\u5faa\u73af\u5fc5\u6302\u3002
\n\u90a3\u4e48\u6b63\u786e\u7684\u89e3\u6cd5\u662f\u600e\u6837\u7684\u5462\uff1f\u80cc\u540e\u8003\u5bdf\u7684\u8981\u70b9\u548c\u9762\u8bd5\u5b98\u6539\u7f16\u7684\u601d\u8def\u53c8\u662f\u4ec0\u4e48\u6837\u5462\uff1f\u5927\u5bb6\u53ef\u4ee5\u5148\u601d\u8003\u4e00\u4e0b\uff0c\u4e2d\u5348 12 \u70b9\u6211\u4f1a\u5728\u8bc4\u8bba\u533a\u4e0e\u5927\u5bb6\u5206\u4eab\u6211\u7684\u89c1\u89e3\u3002
\n", "date_published": "2020-06-17T02:36:44+00:00", "title": "\u5fae\u8f6f\u9762\u8bd5\u771f\u9898+\u9762\u8bd5\u5b98\u6539\u7f16 leetcode \u601d\u8def\uff08\u52a8\u6001\u89c4\u5212\u7bc7\uff09", "id": "https://www.v2ex.com/t/682252" }, { "author": { "url": "https://www.v2ex.com/member/longSwordMan", "name": "longSwordMan", "avatar": "https://cdn.v2ex.com/gravatar/d3ba49dcd4ccb61b085e7dc65625f061?s=73&d=retro" }, "url": "https://www.v2ex.com/t/682023", "date_modified": "2020-06-16T05:29:08+00:00", "content_html": "\u672c\u6587\u9996\u53d1\u4e8e\u672c\u4eba\u5728 Leetcode \u5fae\u4fe1\u8ba8\u8bba\u7fa4\u7684\u76f4\u64ad\u3002
\n\u524d\u4e24\u5e74\u5df2\u5165\u804c\u5fae\u8f6f\uff0c\u7531\u4e8e\u5de5\u4f5c\u7e41\u5fd9\uff0c\u5347\u804c\uff0c\u4e70\u623f\uff0c\u7ed3\u5a5a\u7684\u538b\u529b\u4e00\u76f4\u5728\uff0c\u56e0\u6b64\u4e4b\u524d\u4e00\u76f4\u5728\u5730\u91cc\u6f5c\u6c34\uff0c\u76ee\u524d\u544a\u4e00\u6bb5\u843d\uff0c\u53d1\u4e00\u4e9b\u7ecf\u9a8c\u8d34\uff0c\u56de\u9988\u5730\u91cc\u3002\u4f17\u6240\u5468\u77e5\uff0c\u5fae\u8f6f\u4ee5\u53ca\u8bf8\u591a\u5176\u4ed6\u5927\u5382\u7684\u9762\u8bd5\u7b97\u6cd5\u9898\u4e3b\u8981\u662f\u4ee5 leetcode \u4e3a\u7d20\u6750\u7684\u6539\u7f16\uff0c\u5df2\u7ecf\u505a\u4e86\u4e09\u56db\u5e74\u7684\u9762\u8bd5\u5b98\uff0c\u73b0\u5728\u53d1\u4e00\u4e9b\u9762\u8bd5\u771f\u9898\u4ee5\u53ca\u6211\u81ea\u5df1\u548c\u540c\u4e8b\u4f5c\u4e3a\u9762\u8bd5\u5b98\u7684\u6539\u7f16\u601d\u8def\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u5230\u5927\u5bb6\u3002\u672c\u8d34\u4f1a\u5c06\u5927\u90e8\u5206\u7684 leetcode \u539f\u9898\u8fc7\u4e00\u904d\uff0c\u518d\u9644\u4e0a\u9762\u8bd5\u771f\u9898\u7684\u6539\u5199\u601d\u8def\uff0c\u5c3d\u91cf\u8bb2\u5f97\u50bb\u74dc\u3002\u6211\u5c3d\u91cf\u4fdd\u6301\u6bcf\u5468\u4e24\u66f4+\u56de\u590d\u8bc4\u8bba\uff0c\u770b\u540e\u7eed\u7684\u53cd\u9988\u60c5\u51b5\u51b3\u5b9a\u662f\u5426\u6539\u53d8\u66f4\u65b0\u9891\u7387\u4ee5\u53ca\u589e\u51cf\u5e16\u5b50\u7684\u5185\u5bb9\uff0c\u6bcf\u6761\u8bc4\u8bba\u56de\u590d\u90fd\u4f1a\u770b\uff0c\u4e5f\u53ef\u4ee5\u52a0\u5fae\u4fe1\u4ea4\u6d41\uff1alongswordMAN\uff0c\u6ce8\u660e V2EX \u7684 id \u5373\u53ef\u3002
\n\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u6b63\u9898\u5f00\u59cb\uff1a
\n\u6211\u4eec\u5148\u6765\u770b leetcode \u4e0a\u7b2c 1 \u53f7\u95ee\u9898\uff1aTwo Sum\uff1a\n\u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u548c\u4e00\u4e2a\u76ee\u6807\u503c\uff0c\u627e\u51fa\u6570\u7ec4\u4e2d\u548c\u4e3a\u76ee\u6807\u503c\u7684\u4e24\u4e2a\u6570\u3002\n\u4f60\u53ef\u4ee5\u5047\u8bbe\u6bcf\u4e2a\u8f93\u5165\u53ea\u5bf9\u5e94\u4e00\u79cd\u7b54\u6848\uff0c\u4e14\u540c\u6837\u7684\u5143\u7d20\u4e0d\u80fd\u88ab\u91cd\u590d\u5229\u7528\u3002
\n\u793a\u4f8b:\n\u7ed9\u5b9a nums = [2, 7, 11, 15], target = 9
\n\u56e0\u4e3a nums[0] + nums[1] = 2 + 7 = 9\n\u6240\u4ee5\u8fd4\u56de [0, 1]
\n\u7b80\u5355\u9898\uff0c\u8003\u7684\u662f\u54c8\u5e0c\u8868\uff0c\u66b4\u529b\u4e24\u91cd\u5faa\u73af\u5fc5\u6302\u3002\u73b0\u5728\u7f51\u4e0a\u7684\u5e16\u5b50\u90fd\u559c\u6b22\u548c\u4f60\u8bf4 leetcode \u7b2c XX \u9898 \u662f\u9ad8\u9891\u9898\uff0c\u5176\u5b9e\u90fd\u662f\u61d2\u4eba\u601d\u7ef4\uff0c\u5c5e\u4e8e\u65b0\u624b\u7684\u601d\u7ef4\u8bef\u533a\u3002\u771f\u6b63\u9ad8\u9891\u7684\u662f\u4e00\u4e9b\u7279\u5b9a\u7684\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u6309\u8fd9\u79cd\u201c\u539f\u9898\u7167\u642c\u201d\u601d\u7ef4\uff0c\u9898\u76ee\u7a0d\u5fae\u505a\u4e00\u4e9b\u53d8\u62db\uff0c\u5927\u6982\u7387\u662f\u8981\u9a6c\u5931\u524d\u8e44\u3002
\n\u8fd9\u91cc\u7684\u771f\u6b63\u7684\u9ad8\u9891\u8003\u70b9\u662f\u6570\u636e\u7ed3\u6784\u54c8\u5e0c\u8868\uff0c\u5212\u91cd\u70b9\uff1a\u54c8\u5e0c\u8868\u7684\u5e94\u7528\u9762\u8bd5\u5fc5\u8003\uff0c\u4e00\u5b9a\u4f1a\u4ee5\u67d0\u79cd\u5f62\u5f0f\u5728\u9898\u76ee\u7684\u67d0\u4e00\u90e8\u51fa\u73b0\uff0c\u4ee5\u540e\u8fd8\u4f1a\u8bb2\u5230\u54c8\u5e0c\u8868\u548c\u4e8c\u53c9\u6811\uff0c\u54c8\u5e0c\u8868\u548c\u4e8c\u4f4d\u6570\u7ec4\u7b49\u5176\u4ed6\u6570\u636e\u7ed3\u6784\u7ed3\u5408\u7684\u53d8\u62db\u3002
\n\u9762\u8bd5\u5b98\u6539\u7f16\u601d\u8def\uff1a
\n1.\u4e0d\u540c\u7684\u8fd0\u7b97\u89c4\u5219\uff0c\u53ef\u4ee5\u662f\u4e58\u9664\u6cd5\uff0c\u53ef\u4ee5\u53d1\u660e\u4e00\u4e2a\u8fd0\u7b97\u89c4\u5219\u3002\n\u771f\u9898\uff1a\n\u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u548c\u4e00\u4e2a\u76ee\u6807\u503c\uff0c\u627e\u51fa\u6570\u7ec4\u4e2d\u4e58\u79ef\u4e3a\u76ee\u6807\u503c\u7684\u4e24\u4e2a\u6570\u3002
\n\u793a\u4f8b:\n\u7ed9\u5b9a nums = [2, 7, 11, 15], target = 14\n\u56e0\u4e3a nums[0] * nums[1] = 2 * 7 = 14\n\u6240\u4ee5\u8fd4\u56de [0, 1]\n\u5176\u5b9e\u6362\u6c64\u4e0d\u6362\u836f\uff0c\u4e58\u9664\u6cd5\u6ce8\u610f\u8003\u8651\u8fb9\u754c\u60c5\u51b5\u5373\u53ef\uff08\u9664\u4ee5\u96f6\uff09\uff0c\u5982\u679c\u9762\u8bd5\u5b98\u81ea\u5df1\u53d1\u660e\u7684\u8fd0\u7b97\u6cd5\uff1a\u6bd4\u5982\u8fd0\u7b97\u7b26\uff1abla \u7684\u89c4\u5219\u662f: X 'bla' Y = X*Y - X -Y \u3002 \u540c\u6837\u7684\uff0c\u67e5\u8868\u89c4\u5219\u6539\u4e00\u4e0b\u800c\u5df2\uff0c\u6362\u6c64\u4e0d\u6362\u836f\uff0c\u6ce8\u610f\u8003\u8651\u8fb9\u754c\u60c5\u51b5 \u3002
\n2.\u6362\u4e00\u4e2a\u6570\u636e\u7ed3\u6784\uff0c\u770b\u9762\u8bd5\u8005\u662f\u5426\u80fd\u591f\u5229\u7528\u89c4\u5219\uff0c\u5728\u65f6\u95f4\u590d\u6742\u5ea6\u4e0a\u8fdb\u4e00\u6b65\u4f18\u5316\u3002\u771f\u9898\uff1a\n\u7ed9\u5b9a\u4e00\u4e2a\u6709\u5e8f\u6574\u6570\u6570\u7ec4\u548c\u4e00\u4e2a\u76ee\u6807\u503c\uff0c\u627e\u51fa\u6570\u7ec4\u4e2d\u548c\u4e3a\u76ee\u6807\u503c\u7684\u4e24\u4e2a\u6570\u3002
\n\u793a\u4f8b:\n\u7ed9\u5b9a nums = [2, 7, 11, 15], target = 13\n\u56e0\u4e3a nums[0] + nums[2] = 13\n\u6240\u4ee5\u8fd4\u56de [0, 2]\n\u5f53\u7136\u6709\u5e8f\u6570\u7ec4\u4e5f\u53ef\u4ee5\u6539\u6210\u4e8c\u53c9\u6811\u7b49\u5176\u4ed6\u6570\u636e\u7ed3\u6784\uff0c\u6216\u8005\u662f\u4e00\u4e9b\u5177\u5907\u67d0\u7279\u6027\u7684\u6570\u636e\u7ed3\u6784\u3002\u6709\u5e8f\u6570\u7ec4\u7684\u8bdd\uff0c\u6ce8\u610f\u7528\u4e8c\u5206\u67e5\u627e\uff0c\u53ef\u4ee5\u628a\u65f6\u95f4\u590d\u6742\u5ea6\u964d\u5230 O \uff08 logn \uff09
\n3.\u53d8\u6210\u591a\u6570\u4e4b\u548c\uff0c\u6bd4\u5982 3 sum \u3002\u8fd9\u6837\u7684\u6539\u5199\u5bb9\u6613\u771f\u9898\uff1a\n\u7ed9\u5b9a\u4e00\u4e2a\u6709\u5e8f\u6574\u6570\u6570\u7ec4\u548c\u4e00\u4e2a\u76ee\u6807\u503c\uff0c\u627e\u51fa\u6570\u7ec4\u548c\u4e3a\u76ee\u6807\u503c\u7684\u4e09\u4e2a\u6570\u3002
\n\u793a\u4f8b:\n\u7ed9\u5b9a nums = [2, 7, 11, 15], target = 20\n\u56e0\u4e3a nums[0] + nums[1] + nums[2] = 2 + 7 + 11 = 20\n\u6240\u4ee5\u8fd4\u56de [0, 1, 2]
\n\u601d\u8def\u7c7b\u4f3c\uff0c\u67e5\u4e24\u6b21\u8868\uff0c\u4f46\u6ce8\u610f\u6392\u9664\u7b2c\u4e00\u4e2a\u6570\uff0c\u6bd4\u5982 2+2+2 \u8fd9\u79cd\u4e00\u4e2a\u6570\u91cd\u590d\u7528\u591a\u6b21\u7684\u60c5\u51b5\u3002\n\u5f53\u7136\u8fd9\u90fd\u662f\u5bb9\u6613\u7684\uff0c\u5982\u679c\u4e09\u4e2a\u6570\uff0c\u518d\u7ed3\u5408\u7b2c 1 \u6761\u53d8\u5316\uff0c\u67e5\u8868\u6b21\u6570\u4ecd\u7136\u662f\u4e24\u6b21\uff0c\u4f46\u4e0d\u8981\u88ab\u590d\u6742\u7684\u8fd0\u7b97\u641e\u6655\uff0c\u7136\u540e\u6ce8\u610f\u8fb9\u754c\u6761\u4ef6\u5373\u53ef\u3002
\n", "date_published": "2020-06-16T05:21:57+00:00", "title": "\u5fae\u8f6f\u9762\u8bd5\u771f\u9898+\u9762\u8bd5\u5b98\u6539\u7f16 leetcode \u601d\u8def", "id": "https://www.v2ex.com/t/682023" }, { "author": { "url": "https://www.v2ex.com/member/hejw19970413", "name": "hejw19970413", "avatar": "https://cdn.v2ex.com/gravatar/071b7e9a3418350376cd2382623de015?s=73&d=retro" }, "url": "https://www.v2ex.com/t/680924", "date_modified": "2020-06-12T04:24:06+00:00", "content_html": "\u539f\u9898\uff1a\n\u5047\u8bbe\u4f60\u6b63\u5728\u722c\u697c\u68af\u3002\u9700\u8981 n \u9636\u4f60\u624d\u80fd\u5230\u8fbe\u697c\u9876\u3002
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\n\u6ce8\u610f\uff1a\u7ed9\u5b9a n \u662f\u4e00\u4e2a\u6b63\u6574\u6570\u3002
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\n\u6bcf\u6b21\u4f60\u53ef\u4ee5\u722c 1 \u6216 2 \u6216 3 \u4e2a\u53f0\u9636\uff0c\u4e14\u6bcf\u6b21\u4e0a\u7684\u53f0\u9636\u4e0d\u76f8\u540c\u3002\u4f60\u6709\u591a\u5c11\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u53ef\u4ee5\u722c\u5230\u697c\u9876\u5462\uff1f
\n\u6ce8\u610f\uff1a\u7ed9\u5b9a n \u662f\u4e00\u4e2a\u6b63\u6574\u6570\u3002
\n\u54e5\u54e5\u4eec \u8fd9\u4e2a\u53d8\u5f62 \u600e\u4e48\u89e3\u7b54 \uff1f \u600e\u4e48\u4e2a\u601d\u8def \uff1f
\n", "date_published": "2020-06-12T02:59:05+00:00", "title": "\u6211\u60f3\u95ee\u4e00\u9053 LeetCode \u53d8\u5f62\u9898\uff1a\uff0870\uff09\u722c\u697c\u68af\uff08\u53d8\u5f62\uff09", "id": "https://www.v2ex.com/t/680924" } ] }