LeetCode Longest Substring Without Repeating Characters
来源：互联网 发布：sql字段别名 编辑：程序博客网 时间：2024/06/05 06:35
太久不动手折腾一下午，居然不如从前了。
收藏一个评论区特别精炼的代码。
int lengthOfLongestSubstring2(string s) {int m[129] = { 0 }; //每个字母的位置+1，非常巧妙int i, j;int cnt = 0, pre = 0; //cnt当前长度，pre当前计数开始的位置int max = 0;int c;//当前字母for (i = 0; c = s[i]; i++) {if (pre < m[c]) {//如果当前计数开始的位置就是字母c（因为m[c]比c上次的位置大1）if (max < cnt)max = cnt;cnt = i - m[c];//更新当前长度pre = m[c];//从上次C的位置的下一个字母开始计数}cnt++;m[c] = i + 1;}return max > cnt ? max : cnt;} 0 0
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