g0101_0200.s0171_excel_sheet_column_number

Class Solution

java.lang.Object

g0101_0200.s0171_excel_sheet_column_number.Solution

public class Solution
extends Object

171 - Excel Sheet Column Number.

Easy

Given a string columnTitle that represents the 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
... 

Example 1:

Input: columnTitle = “A”

Output: 1

Example 2:

Input: columnTitle = “AB”

Output: 28

Example 3:

Input: columnTitle = “ZY”

Output: 701

Example 4:

Input: columnTitle = “FXSHRXW”

Output: 2147483647

Constraints:

• 1 <= columnTitle.length <= 7
• columnTitle consists only of uppercase English letters.
• columnTitle is in the range ["A", "FXSHRXW"].

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	titleToNumber(String s)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

titleToNumber

public int titleToNumber(String s)