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
Credits:
Special thanks to @ts for adding this problem and creating all test cases.
168. Excel Sheet Column Title 的类似题目，这次是给出列的题目，返回对应的数字。
Python：
class Solution(object):
def titleToNumber(self, s):
result = 0
for i in xrange(len(s)):
result *= 26
result += ord(s[i]) - ord('A') + 1
return result
C++：
class Solution {
public:
int titleToNumber(string s) {
int n = s.size();
int res = 0;
int tmp = 1;
for (int i = n; i >= 1; --i) {
res += (s[i - 1] - 'A' + 1) * tmp;
tmp *= 26;
}
return res;
}
};
类似题目：
[LeetCode] 168. Excel Sheet Column Title 求Excel表列名称
All LeetCode Questions List 题目汇总