Solution: First Missing Positive
Understand how to identify the first missing positive integer in an unsorted array by applying the cyclic sort pattern. This lesson guides you through optimizing the solution for O(n) time complexity and constant space, enabling efficient in-place sorting and index-based checks to solve the problem effectively.
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...