Move All Negative Elements to End
Problem Statement Given an array arr[] containing both positive and negative integers, move all negative elements to the end of the array without changing the relative order of elements. My Thought...

Source: DEV Community
Problem Statement Given an array arr[] containing both positive and negative integers, move all negative elements to the end of the array without changing the relative order of elements. My Thought Process At first, I thought this is similar to partitioning (like quicksort or two-pointer problems). But then I noticed an important constraint: The order of elements must not change. This changes the entire approach. If I try swapping elements (like placing negatives at the end using two pointers), the order of positive elements or negative elements may get disturbed. So I needed a way to rearrange elements while keeping their original sequence intact. Key Observation We are not asked to sort. We are only asked to: Keep all non-negative elements in the front (in the same order) Move all negative elements to the end (in the same order) This means the solution must be stable. MY way of Approach To maintain order, I used an extra array. Step 1: Create a temporary array This helps us rebuild t