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非递减子序列 class Solution { public: void backtracking(vector &nums, int start) { if(path.size() > 1) { ret.push_back(path); } if(start == nums.size()) { r 阅读全文
posted @ 2024-09-09 11:47
ikun1111
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复原IP地址 class Solution { public: bool isValid(string s, int start, int end) { if (start > end) { return false; } if (s[start] == '0' && start != end) { 阅读全文
posted @ 2024-09-09 10:46
ikun1111
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1, 组合总和 class Solution { public: void backtracking(vector &candidates, int target, int sum, int start) { if(sum > target) { return; } if(sum == target 阅读全文
posted @ 2024-09-09 10:14
ikun1111
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1.组合 class Solution { public: void backtracking(int n, int k, int start) { if(path.size() == k) { ret.push_back(path); return; } for(int i = start; i 阅读全文
posted @ 2024-09-09 09:51
ikun1111
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