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Excel Sheet Column Title
Given a positive integer, return its corresponding column title as appear in an Excel sheet.
For example:
1 -> A 2 -> B 3 -> C ... 26 -> Z 27 -> AA 28 -> AB
Credits:
Special thanks to for adding this problem and creating all test cases.
public class Solution { public String convertToTitle(int n) { StringBuilder sb = new StringBuilder(); while(n!=0){ if(n%26 ==0){ sb.append((char)(26+'A'-1)); }else{ sb.append((char)(n%26+'A'-1)); } if(n%26 ==0 ){ n=n/26-1; }else{ n=n/26; } } return sb.reverse().toString(); }} 转载地址：http://ununi.baihongyu.com/