Longest Palindromic Substring
来源：互联网 发布：筑巢软件骗局 编辑：程序博客网 时间：2024/06/05 22:42
public class Solution { public String longestPalindrome(String s) { if (s == null || s.length() == 0) { return ""; } if (s.length() == 1) { return s; } String maxStr = ""; for (int i = 0; i < 2*s.length() - 1; i++) { int left = i/2; int right = i/2; if (i%2 == 1) { right++; } String str = helper(s, left, right); maxStr = (str.length() - maxStr.length() > 0) ? str : maxStr; } return maxStr; } private String helper(String s, int left, int right) { while (left >= 0 && right < s.length() && s.charAt(left) == s.charAt(right)) { left--; right++; } return s.substring(left + 1, right); }} 0 0
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