DIY: String to Integer (atoi)
Learn to implement the atoi function that converts a string to a 32-bit signed integer in Python. Understand how to process whitespaces, optional plus or minus signs, and handle non-numeric characters to produce valid integer outputs. This lesson prepares you to tackle string parsing challenges commonly seen in coding interviews.
We'll cover the following...
We'll cover the following...
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.
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If it isn’t numeric, it may be a
+or-sign, which will determine if the final result is negative or positive, ...