LeetCode--Excel Sheet Column Number(Excel表格的列名转数字)Python
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题目:
给定一个Excel表格的列名,将该列名转为对应数字,样例如下:
A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28
解题思路:
对字符串进行遍历
代码(Python):
class Solution(object): def titleToNumber(self, s): """ :type s: str :rtype: int """ dict0 = {} for i in range(26): dict0[chr(ord('A')+i)]=i+1 output = 0 for i in range(len(s)): output = output*26+dict0[s[i]] return output
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