February 4, 2011
The columns in an Excel spreadsheet are “numbered” A through IV, where A corresponds to 1, Z corresponds to 26, AA corresponds to 27, and IV corresponds to 256.
Your task is to write functions that translate back and forth between the two representations. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.
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