Move all negative elements to end

Given an unsorted array arr [] of size N having both negative and positive integers. The task is placing all negative element at the end of array without changing the order of positive element and negative element. 

Note: Solution language is your choice (Java, Python, Dotnet, etc…)

Example 1:

Input:

N = 8

Arr [] = {1, -1, 3, 2, -7, -5, 11, 6}

Output:

1  3  2  11  6 -1  -7  -5

Example 2:

Input:

N=8

Arr [] = {-5, 7, -3, -4, 9, 10, -1, 11}

Output:

7  9  10  11  -5  -3  -4  -1

 

Your Task:  
You don’t need to read input or print anything. Your task is to complete the function segregate Elements () which takes the array arr [] and its size N as inputs and store the answer in the array arr [] itself.

Constraints:
1 ≤ N ≤ 10⁵
-10⁵ ≤ arr [] ≤ 10⁵