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Solution: Remove Element

Explore how to efficiently remove all instances of a given value from an integer array using the two-pointer strategy. Learn to modify the array in place without extra memory allocation, maintain relative order, and return the count of remaining elements. This lesson helps you grasp key pointers manipulation and optimize time and space complexities for coding interviews.

Statement

You are given an integer array, nums, and an integer, val. Your task is to remove all occurrences of val from nums in place, meaning no additional memory allocation should be used. The relative order of the elements in the array may be changed. After modifying the array, return the number of elements that are not equal to val.

Let ...