09.回文数
作者:互联网
题目:
提交01: 目的是先实现,后优化
class Solution { public boolean isPalindrome(int x) { if(x<0){ return false; } boolean res = false; int[] ins = new int[20]; int index =0; while(x!=0){ ins[index++] = x%10; x = x/10; } int i=0,j=index-1; for(;i<j&&ins[i]==ins[j];i++,j--); if(i>=j){ res= true; } return res; } }
提交02:优化
class Solution { public boolean isPalindrome(int x) { if(x<0){ return false; } int y=0,ty = 0; int tx =x; while(tx!=0){ ty = tx%10; y=y*10+ty; tx = tx/10; } return x==y; } }
标签:int,res,09,Solution,isPalindrome,boolean,public,回文 来源: https://www.cnblogs.com/baizhuang/p/11442271.html