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
class Solution {
public:
int titleToNumber(string s) {
if(s.size() <= 0) return 0;
int col = s[0] - 'A' + 1;
for(int i=1;i<s.size();i++){
col = col * 26 + s[i] - 'A' + 1;
}
return col;
}
};
D93 171. Excel Sheet Column Number 题目链接 171. Excel Sheet ...
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171. Excel Sheet Column Number【思路】 进制换算；
171. Excel Sheet Column Number https://leetcode.com/probl...
26进制转10进制：171. Excel Sheet Column Number 10进制转16进制：405. C...
题目地址：https://leetcode.com/problems/excel-sheet-column-num...
这个比较简单就是按公式就好了
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本文标题：171. Excel Sheet Column Number
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