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 -> 1B -> 2C -> 3...Z -> 26AA -> 27AB -> 28 實現代碼：/****************************************************************************** @COPYRIGHT NOTICE* @Copyright (c) 2015, 楚興* @All rights reserved* @Version : 1.0* @Author : 楚興* @Date : 2015/2/6 14:29* @Status : Accepted* @Runtime : 15 ms *****************************************************************************/ #include <iostream> #include <vector> #include <algorithm> using namespace std; class Solution { public:int titleToNumber(string s) {int column = 0;for (int i = 0; i < s.size(); i++){if (s[i] >= 'A' && s[i] <= 'Z'){column = column * 26 + s[i] - 'A' + 1;}}return column;} }; int main() {Solution s;int a = s.titleToNumber("AA");cout<<a<<endl;system("pause"); }

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