LeetCode 171. Excel Sheet Column Number in Java

In this post we will solve LeetCode 171Excel Sheet Column Number problem using the Java programming language.

If interested in this problem, I suggest you go to the LeetCode website and read the description of the problem in case something has changed. If you are still interested please read on.

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 


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

Related Topics:

o Math
o String

The problem is relatively simple. We are given a string of uppercase characters each of which represents a digit in base 26. We need to compute the integer value associated with the string. Continue reading “LeetCode 171. Excel Sheet Column Number in Java”