String to Integer (atoi) · Coding Interview Practice

String to Integer (atoi)Implement atoi, converting a string to a 32-bit signed integer, handling whitespace, sign, and overflow clamping.Constraints

0 <= s.length <= 200

s consists of letters, digits, spaces, "+", "-" and "."

Clamp results to the 32-bit signed integer range

Examples

Input: s = "42" Output: 42

Input: s = " -42" Output: -42

Input: s = "4193 with words" Output: 4193

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