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Solution: String to Integer (atoi)

Let's solve the String to Integer problem using the pattern.

Statement

Write a function, myAtoi(string s), that converts a string to a 32–bit signed integer. It is equivalent to the atoi function in C/C++.

The myAtoi function reads the input string, s, from left to right for the conversion process. The conversion begins by removing any leading whitespace. Then, it checks if the next character is '+' or '-'. If it's '-', it implies that the result is negative, and there must be a '-' sign in front of the resulting integer. Otherwise, '+' implies that the result is positive, so there is no need to add a '+' sign in front of the resulting integer. For example, "- ...