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
Credits:
Special thanks to @ifanchu for adding this problem and creating all test cases.
通過題意，就是將10進制轉26進制。
package leetcode;
public class ExcelSheetColumnTitle {
public String convertToTitle(int n) {
String ans = "";
if (n <= 0){
return ans;
}else{
while (n>0){
n --;
char c = (char) (n % 26 + 'A');
ans = c + ans;
n = n / 26;
}
}
return ans;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(new ExcelSheetColumnTitle().convertToTitle(28));
}
}
