LeetCode之Longest Substring Without Repeating Characters
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class Solution {public: int lengthOfLongestSubstring(string s) { vector<int> loc(256, -1); int start = -1, res(0); for(int i = 0; i < s.size(); ++i){ if(loc[s[i]] > start) start = loc[s[i]]; if(i - start > res) res = i - start; loc[s[i]] = i; } return res; }};
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