# Leetcode Excel Sheet Column Number problem solution

In this Leetcode Excel Sheet Column Number problem solution we have Given a string columnTitle that represents the column title as appears in an Excel sheet, return its corresponding column number.

## Problem solution in Python.

```class Solution(object):
def titleToNumber(self, s):
"""
:type s: str
:rtype: int
"""
s=S[::-1]
return sum([(ord(s[i])-64)*(26**i) for i in range(len(s))])
```

## Problem solution in Java.

```class Solution {
public int titleToNumber(String s) {
int len= s.length()-1;
int res=0;
for(int i=0;i<s.length();i++)
res+=Math.pow(26,len-i)*(s.charAt(i)-64);
return res;

}
}
```

## Problem solution in C++.

```class Solution {
public:
int titleToNumber(string s) {
int ans=0,i=0;
while(i<s.length())
ans= ans*26 + (s[i++]-'A'+1);
return ans;
}
};
```

## Problem solution in C.

```#include<string.h>
int titleToNumber(char * s){
int ans=0;
int len=strlen(s);
for(int i=0;i<len;i++){
ans*=26;
ans+=(s[i]-'A'+1);
}
return ans;
}
```