LeetCode [168] Excel Sheet Column Title

 168. Excel Sheet Column Title

Easy

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"

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//there's no "0", so we -1 every iteration class Solution { public String convertToTitle(int n) { String s = ""; n--; while(n>=0){ int t = (n)%26; char c = (char)('A'+t); s = c+s; n = (n)/26-1; } return s; } }