1、题目
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
2、wepon的解法
2.1 解析
2.2 代码
C++
class Solution {
public:
int titleToNumber(string s) {
int result=0;
int base=1;
for(int i=s.size()-1;i>=0;i--){
result+=(s[i]-'A'+1)*base;
base*=26;
}
return result;
}
};