[LeetCode] Longest Substring Without Repeating Characters
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class Solution {public: int lengthOfLongestSubstring(string s) { // Start typing your C/C++ solution below // DO NOT write int main() function vector<int> v(256, -1); int pos = 0; int ret = 0; for (int i = 0; i < s.size(); i++) { char ch = s[i]; if (pos <= v[ch]) { ret = max(ret, i - pos); pos = v[ch] + 1; } v[ch] = i; } ret = max(ret, (int)s.size() - pos); return ret; }};Small Case: 0ms
Large Case: 48ms
Time: O(n)
Space: O(n)
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