Related to question Excel Sheet Column Title
Given a column title as appear in an Excel sheet, return its corresponding column number.
For example:
A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28 public class Solution {
public int titleToNumber(String s)
{
int result = 0;
for (int i = 0; i < s.length(); i++)
{
result = result * 26 + (s.charAt(i) - 'A' + 1);
}
return result;
}
}
//charAt() 方法返回指定索引处的char值。索引范围是从0到length() - 1。对于数组索引，序列的第一个char值是在索引为0，索引1