[LeetCode]168. Excel Sheet Column Title(Excel表格列标题)
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168. Excel Sheet Column Title
和171题是一个类型的,参考[LeetCode]171. Excel Sheet Column Number
Given a positive integer, return its corresponding column title as appear in an Excel sheet.
给定一个正整数,返回相应的列标题,如Excel表中所示。
For example:
1 -> A2 -> B3 -> C...26 -> Z27 -> AA28 -> AB
代码如下:
#include <iostream>#include <string>using namespace std;class Solution {public: string convertToTitle(int n) { string s = ""; if(n == 0) return s; else //return convertToTitle(n/26) + char((n-1)%26+'A');//n=26时 return AZ 错误 return convertToTitle((n-1)/26) + char((n-1)%26+'A'); }};int main(){ Solution a; int n; cin >> n; cout << a.convertToTitle(n) << endl; return 0;}
注意:
- 递归时convertToTitle((n-1)/26),n一定要减1,否则会发生错误
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