标签：appear logs style nbsp log title exce string public
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
C++（6ms）：
1 class Solution { 2 public: 3 int titleToNumber(string s) { 4 int ans = 0 ; 5 int k = 0 ; 6 for (int i = s.size()-1; i >= 0;i-- ){ 7 ans += (s[i]-‘A‘+1)*pow(26,k++); 8 } 9 return ans ; 10 } 11 };
C++（9ms）：
1 class Solution { 2 public: 3 int titleToNumber(string s) { 4 int ans = 0 ; 5 int k = 0 ; 6 for (int i = 0; i < s.size();i++ ){ 7 ans = ans * 26 + (s[i]-‘A‘+1); 8 } 9 return ans ; 10 } 11 };
171. Excel Sheet Column Number
标签：appear logs style nbsp log title exce string public
原文地址：http://www.cnblogs.com/-Buff-/p/6537661.html
