Solution: Remove Element
Explore how to efficiently remove all occurrences of a given value from an array without extra memory allocation, using the two pointers approach. Understand how to modify the array in place by shifting valid elements forward and calculate the new length of the refined array. This lesson helps you grasp the practical implementation of two pointers to solve linear data structure problems with optimal time and space complexity.
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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.
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