Convert integer into its character equivalent, where 0 => a, 1 => b, etc

Question

I want to convert an integer into its character equivalent based on the alphabet. For example:

0 => a
1 => b
2 => c
3 => d

etc.

Answer 1

If you are looking for TypeScript working functions then follow

public numericValue = (alphaChar: any) => alphaChar.toUpperCase().charCodeAt(0) - 64;

public alphaValue = (numericDigit: any) => 
   String.fromCharCode(64 + numericDigit) : '';

You can make several checks like (numericDigit >= 1 && numericDigit <= 26) ? inside function body as per the requirements.