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Grokking the Coding Interview Patterns in C#

Solution: Remove Duplicates from Sorted Array

Explore removing duplicates from a sorted array using the two-pointer method. Learn how to modify the array in-place to keep unique elements with optimal time and space complexity. This lesson helps you implement and understand an essential pattern for coding interviews.

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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 ...