125. Valid Palindrome
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题目:https://leetcode.com/problems/valid-palindrome/
代码:
public class Solution { public boolean isPalindrome(String s) { String l = s.toLowerCase(); int i=0,j=l.length()-1; while(i<l.length()&&j>=0) { if(isbd(l.charAt(i))) { i++; continue; } if(isbd(l.charAt(j))) { j--; continue; } if(l.charAt(i)!=l.charAt(j)) return false; i++; j--; } return true; } public boolean isbd(char m) { if((m<='z'&&m>='a')||(m<='9'&&m>='0')) return false; else return true; }}14ms=============================改了一下判决条件whiel(i<=j)10mspublic class Solution { public boolean isPalindrome(String s) { String l = s.toLowerCase(); int i=0,j=l.length()-1; while(i<=j) { if(isbd(l.charAt(i))) { i++; continue; } if(isbd(l.charAt(j))) { j--; continue; } if(l.charAt(i)!=l.charAt(j)) return false; i++; j--; } return true; } public boolean isbd(char m) { if((m<='z'&&m>='a')||(m<='9'&&m>='0')) return false; else return true; }}
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