171. Excel Sheet Column Number(C++)
171. Excel Sheet Column Number
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
题目大意:
相关题目:Excel 表格列标题
给定一个出现在Excel表格中的列标题,返回其对应的列号。
样例如题目描述。
解题方法:
水题,26进制转化为10进制
注意事项:
C++代码:
class Solution {
public:
int titleToNumber(string s) {
int ret=;
for(int i=;i<s.size();i++)
{
ret=ret*+(s[i]-'A'+);
}
return ret;
}
};
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