Solution: First Missing Positive
Discover how to identify the smallest missing positive integer in an unsorted array by applying an in-place cyclic sort algorithm. Learn to efficiently reorder elements, ignore negatives, and achieve an O(n) time complexity with O(1) space, enhancing your coding interview problem-solving skills.
Statement
Given an unsorted integer array, nums, return the smallest missing positive integer.
Create an algorithm that runs with an time complexity and utilizes a constant amount of space.
Note: The smallest missing positive isn’t the first positive number that’s missing in the range of elements in the input, but the first positive number that’s missing if we start from .
Constraints:
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nums.length -
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