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Leetcode Problem 171. Excel Sheet Column Number
171. Excel Sheet Column Number
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Leetcode Solutions
Base- to Base- Conversion
Solution Idea
Algorithm Steps
Code Implementation
Complexity Analysis
Initialize a variable
result
to 0. This will hold the final column number.
Iterate over each character in the
columnTitle
string from left to right.
Convert the current character to its corresponding number (1-26) by subtracting the ASCII value of 'A' and adding 1.
Multiply
result
by 26 (since we're moving to the next 'digit' in base-26) and add the number from step 3 to
result
.
Continue this process until all characters have been processed.
Return
result
as the final column number.
Right to Left Base- to Base- Conversion
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