DIY: String to Integer (atoi)
Understand how to implement a string to integer conversion function that handles whitespace, signs, and invalid input. Learn to parse input correctly and constrain results within 32-bit signed integer limits, preparing you for similar coding interview questions.
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, ...