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【LeetCode】168 - Excel Sheet Column Title

时间:2015-08-07 00:15:02      阅读:121      评论:0      收藏:0      [点我收藏+]

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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 

Solution: 由于A->1,  计算s的末尾时需先减去1

 1 class Solution {
 2 public:
 3     string convertToTitle(int n) {
 4         string s;
 5         while(n){
 6             s =  (char)(A+(n-1)%26)+s;
 7             n = (n-1)/26;
 8         }
 9         return s;
10     }
11 };

 

【LeetCode】168 - Excel Sheet Column Title

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原文地址:http://www.cnblogs.com/irun/p/4709446.html

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