carloscn / carloscn/structstudy

leetcode171:Excel 表列序号(excel-sheet-column-number)

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Level-easy 一般问题 字符串
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C
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Description

### 问题描述:

给你一个字符串 columnTitle ,表示 Excel 表格中的列名称。返回 该列名称对应的列序号 。

例如:

A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28
...
 

示例 1:

输入: columnTitle = "A"
输出: 1

示例 2:
输入: columnTitle = "AB"
输出: 28

示例 3:
输入: columnTitle = "ZY"
输出: 701
 
提示:

1 <= columnTitle.length <= 7
columnTitle 仅由大写英文组成
columnTitle 在范围 ["A", "FXSHRXW"] 内

来源:力扣(LeetCode)
链接:https://leetcode.cn/problems/excel-sheet-column-number

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