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; } };
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[LeetCode] 168. Excel Sheet Column Title 求Excel表列名称
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