Leetcode 41. First Missing Positive in Python | Python Leetcode | Python Coding Tutorial | ASMR

Published: 19 August 2024
on channel: Code is Art
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Leetcode 41. First Missing Positive in Python | Python Leetcode | Python Coding Tutorial | ASMR


Given an unsorted integer array nums. Return the smallest positive integer that is not present in nums.
You must implement an algorithm that runs in O(n) time and uses O(1) auxiliary space.

Example 1:
Input: nums = [1,2,0]
Output: 3
Explanation: The numbers in the range [1,2] are all in the array.

Example 2:
Input: nums = [3,4,-1,1]
Output: 2
Explanation: 1 is in the array but 2 is missing.

Example 3:
Input: nums = [7,8,9,11,12]
Output: 1
Explanation: The smallest positive integer 1 is missing.

Leetcode Problem Link: https://leetcode.com/problems/first-m...


Code Link : https://github.com/CodeIsArtYT/Leetco...

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