LeetCode Excel Sheet Column Title (输出excel表的列名称)

题意:给一个数字n,输出excel表的列名称。

思路:其实观察可知道,是个26进制的标记而已。那就模拟一下,每次计算一位时就先左移1位,再进行计算。

 1 class Solution {
 2 public:
 3     string convertToTitle(int n) {
 4         string ans="";
 5         while(n)    //26进制,但是输出时不同而已,是从1开始,而不是0。每次计算将其先左移1位即可。
 6         {
 7             ans+=(n-1)%26+‘A‘;
 8             n=(n-1-(n-1)%26)/26;
 9         }
10         reverse(ans.begin(),ans.end());
11         return  ans;
12     }
13 };

AC代码

时间: 2024-11-06 17:15:11

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