LeetCode in Java - String to Integer (atoi)

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#String #Integer #Atoi

Taking the below cases into consideration,
- If the string is empty or only contains whitespaces
- if the string has leading whitespaces
- if the string has the plus + or minus - sign
- if the number the string converts to could fit a 32-bit signed Integer
to solve this LeetCode String to Integer (atoi) problem in Java.

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  1. Edvin He
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