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Solution: Remove Duplicates from Sorted Array

Understand how to apply the two pointers method to efficiently remove duplicates from a sorted array in-place. This lesson teaches you to keep unique elements while maintaining order and optimizing performance with O(n) time and O(1) space.

Statement

You are given an integer array nums that is already sorted in non-decreasing order. Your task is to remove the duplicate values in-place so that each element in the array appears only once, while preserving the original relative order of the elements.

After removing the duplicates, let k be the number of unique elements remaining in the array. The first k ...