Moving All Negative Elements to the End of an Array in Python

Problem Explanation You are given an array arr[] containing both positive and negative integers . Your task is to move all the negative elements to the end of the array while maintaining the order of positive elements . Note: The operation should be done in-place , meaning no extra array should be used. Example: Input: arr = [1, -1, 3, 2, -7, -5, 11, 6] Output: [1, 3, 2, 11, 6, -1, -7, -5] Input: arr = [-5, 7, -3, -4, 9, 10, -1, 11] Output: [7, 9, 10, 11, -5, -3, -4, -1] Method Used: Two Pointer Technique (Stable Partition) We use a pointer to track where the next positive number should go, and rearrange elements accordingly. Why This Method? Time complexity: O(n) (single traversal) Space complexity: O(1) (in-place) Maintains order of positive elements Simple and efficient Python Code with Explanation class Solution : def segregateElements ( self , arr ): pos_index = 0 pos_index keeps track of where the next positive element should be placed. for i in range ( len ( arr )): Loop through