分析
难度 易
来源
https://leetcode.com/problems/excel-sheet-column-title/
十进制转26进制
注意,z表示26,而非0
题目
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
...
Example 1:
Input: 1
Output: "A"
Example 2:
Input: 28
Output: "AB"
Example 3:
Input: 701
Output: "ZY"
解答
1 package LeetCode; 2 3 public class L168_ExcelSheetColumnTitle { 4 public String convertToTitle(int n) { 5 StringBuilder sb=new StringBuilder(); 6 while(n>0){ 7 if(n%26!=0){ 8 sb.append((char)(n%26+64)); 9 n/=26; 10 } 11 else{ 12 sb.append('Z'); 13 n=n/26-1; 14 } 15 } 16 return sb.reverse().toString(); 17 } 18 public static void main(String[] args){ 19 L168_ExcelSheetColumnTitle l168=new L168_ExcelSheetColumnTitle(); 20 System.out.println(l168.convertToTitle(52)); 21 } 22 }
博客园的编辑器没有CSDN的编辑器高大上啊