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DIY: String to Integer (atoi)

Understand how to implement the atoi function in Ruby by converting strings into 32 bit signed integers, managing spaces, signs, and non numeric characters accurately.

Problem statement

In this coding exercise, you are given a string. You have to convert this string to a 32-bit signed integer. The string may have a leading whitespace. The first non-whitespace character in the string may or may not be numeric.

  • If it isn’t numeric, it may be a + or - sign, which will determine if the final result is negative or positive, ...