给定一个正整数,返回它在Excel表中相对应的列名称。
示例:
    1 -> A
    2 -> B
    3 -> C
    ...
    26 -> Z
    27 -> AA
    28 -> AB

详见:https://leetcode.com/problems/excel-sheet-column-title/description/

实现语言:Java

class Solution {
public String convertToTitle(int n) {
String res="";
while(n!=0){
res=(char)((n-1)%26+'A')+res;
n=(n-1)/26;
}
return res;
}
}

参考:https://www.cnblogs.com/ganganloveu/p/4175848.html

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