[LC] 168. Excel Sheet Column Title
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"
class Solution {
public String convertToTitle(int n) {
StringBuilder sb = new StringBuilder();
while (n > 0) {
n -= 1;
char letter = (char)(n % 26 + 'A');
sb.append(letter);
n = n / 26;
}
return sb.reverse().toString();
}
}
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