LeetCode 005 Longest Palindromic Substring
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字符串中最长回文子串
public class Solution { public String longestPalindrome(String s) { if(s == null || s.length() == 0){ return s; } int n = s.length(); String ans = ""; for(int i=0;i<n;i++){ String cur = useme(s,i,i); if(cur.length()>ans.length()){ ans = cur; } cur = useme(s,i,i+1); if(cur.length()>ans.length()){ ans = cur; } } return ans; } public String useme(String s, int c1,int c2){ int l = c1; int r = c2; while(l>=0 && r<s.length() && s.charAt(l) == s.charAt(r)){ l--; r++; } return s.substring(l+1,r); }}
每个index作为当中取回文,
0 0
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