给定一个Excel表格中的列名称,返回其相应的列序号。
示例:
A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28
详见:https://leetcode.com/problems/excel-sheet-column-number/description/
Java实现:
class Solution { public int titleToNumber(String s) { int res=0; for(int i=0;i<s.length();++i){ res=res*26; res+=s.charAt(i)-'A'+1; } return res; } }
详见:https://www.cnblogs.com/ganganloveu/p/4191180.html