{"id":38,"date":"2024-10-15T18:52:11","date_gmt":"2024-10-15T10:52:11","guid":{"rendered":"https:\/\/blog.zeronely.cn\/?p=38"},"modified":"2024-10-15T18:52:13","modified_gmt":"2024-10-15T10:52:13","slug":"%e5%88%b7%e9%a2%98%e5%91%a8%e8%ae%b0%ef%bc%883%ef%bc%89-15-%e4%b8%89%e6%95%b0%e4%b9%8b%e5%92%8c","status":"publish","type":"post","link":"https:\/\/blog.zeronely.cn\/index.php\/2024\/10\/15\/%e5%88%b7%e9%a2%98%e5%91%a8%e8%ae%b0%ef%bc%883%ef%bc%89-15-%e4%b8%89%e6%95%b0%e4%b9%8b%e5%92%8c\/","title":{"rendered":"\u5237\u9898\u5468\u8bb0\uff083\uff09\u2014\u201415.\u4e09\u6570\u4e4b\u548c"},"content":{"rendered":"\n

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class Solution {\npublic:\n    vector<vector<int>> threeSum(vector<int>& nums) \n    {\n        sort(nums.begin(),nums.end());\n        vector<vector<int>> ans;\n        for(int i=0;i<nums.size()-2;i++)\n        {\n            if(i>0&&nums[i]==nums[i-1]) continue;\n            int k=nums.size()-1;\n            for(int j=i+1;j<nums.size()-1;j++)\n            {\n                \n                if(j>i+1&&nums[j]==nums[j-1]) continue;\n                while(nums[i]+nums[j]+nums[k]>0&&k>j) k--;\n                if(k<=j) break;\n                if(nums[i]+nums[j]+nums[k]==0)\n                {\n                    ans.push_back({nums[i],nums[j],nums[k]});\n                    continue;\n                }\n            }\n        }\n        return ans;\n    }\n};<\/code><\/pre>\n\n\n\n
\u518d\u8d34\u4e00\u4e2aleetcode\u7684\u5b98\u65b9\u4ee3\u7801\uff08\u5e26\u6ce8\u91ca\uff09\uff1a<\/p>\n\n\n\n
class Solution {\npublic:\n    vector<vector<int>> threeSum(vector<int>& nums) {\n        int n = nums.size();\n        sort(nums.begin(), nums.end());\n        vector<vector<int>> ans;\n        \/\/ \u679a\u4e3e a\n        for (int first = 0; first < n; ++first) {\n            \/\/ \u9700\u8981\u548c\u4e0a\u4e00\u6b21\u679a\u4e3e\u7684\u6570\u4e0d\u76f8\u540c\n            if (first > 0 && nums[first] == nums[first - 1]) {\n                continue;\n            }\n            \/\/ c \u5bf9\u5e94\u7684\u6307\u9488\u521d\u59cb\u6307\u5411\u6570\u7ec4\u7684\u6700\u53f3\u7aef\n            int third = n - 1;\n            int target = -nums[first];\n            \/\/ \u679a\u4e3e b\n            for (int second = first + 1; second < n; ++second) {\n                \/\/ \u9700\u8981\u548c\u4e0a\u4e00\u6b21\u679a\u4e3e\u7684\u6570\u4e0d\u76f8\u540c\n                if (second > first + 1 && nums[second] == nums[second - 1]) {\n                    continue;\n                }\n                \/\/ \u9700\u8981\u4fdd\u8bc1 b \u7684\u6307\u9488\u5728 c \u7684\u6307\u9488\u7684\u5de6\u4fa7\n                while (second < third && nums[second] + nums[third] > target) {\n                    --third;\n                }\n                \/\/ \u5982\u679c\u6307\u9488\u91cd\u5408\uff0c\u968f\u7740 b \u540e\u7eed\u7684\u589e\u52a0\n                \/\/ \u5c31\u4e0d\u4f1a\u6709\u6ee1\u8db3 a+b+c=0 \u5e76\u4e14 b<c \u7684 c \u4e86\uff0c\u53ef\u4ee5\u9000\u51fa\u5faa\u73af\n                if (second == third) {\n                    break;\n                }\n                if (nums[second] + nums[third] == target) {\n                    ans.push_back({nums[first], nums[second], nums[third]});\n                }\n            }\n        }\n        return ans;\n    }\n};\n\n\u4f5c\u8005\uff1a\u529b\u6263\u5b98\u65b9\u9898\u89e3\n\u94fe\u63a5\uff1ahttps:\/\/leetcode.cn\/problems\/3sum\/solutions\/284681\/san-shu-zhi-he-by-leetcode-solution\/\n\u6765\u6e90\uff1a\u529b\u6263\uff08LeetCode\uff09\n\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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