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Grokking the Coding Interview Patterns in Go

Solution: Remove Element

Explore how to remove all occurrences of a given value from an integer array in place by using two pointers. Learn to shift valid elements forward within the same array and return the new count. Understand the algorithm's linear time complexity and constant space usage while mastering this common coding interview pattern.

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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.

Let ...