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File: Readme.md

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File: Readme.md
Role: Documentation
Content type: text/markdown
Description: Documentation
Class: IrisSG Technical Test
Convert spreadsheet column letters to numbers
Author: By
Last change:
Date: 7 days ago
Size: 908 bytes
 

Contents

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Task Name: Excel Sheet Column Letter to Column Number And Vice Versa.

Pick from C#, JavaScript or PHP to complete this task, it can be done in any IDE.

  1. __PART 1__: Given a string (columnTitle) that represents the column title as it appears in an Excel sheet, return its corresponding column number.

Example:

| Input | Output | |-------|--------| | A | 1 | | B | 2 | | C | 3 | | Z | 26 | | AA | 27 | | AB | 28 |

  1. __PART 2__: Given a positive number, convert the number to the corresponding Excel column name.

Example:

| Input | Output | |-------|--------| | 26 | Z | | 51 | AY | | 52 | AZ | | 80 | CB | | 676 | YZ | | 702 | ZZ | | 705 | AAC |

Usage

Test from console

php ./index.php A 1 76 AAZ

Run test

./vendor/bin/phpunit ./tests/ExcelConverter/*