Given an array of size N containing only 0s, 1s, and 2s; sort the array in ascending order.

**Example 1:**

Input:N = 5 arr[]= {0 2 1 2 0}Output:0 0 1 2 2Explanation:0s 1s and 2s are segregated into ascending order.

**Example 2:**

Input:N = 3 arr[] = {0 1 0}Output:0 0 1Explanation:0s 1s and 2s are segregated into ascending order.

**Your Task:**

You don’t need to read input or print anything. Your task is to complete the function **sort012() **that takes an array arr and N as input parameters and **sorts the array in-place.**

**Expected Time Complexity: **O(N)**Expected Auxiliary Space:** O(1)

**Constraints:**

1 <= N <= 10^6

0 <= A[i] <= 2

## Solution

class Solution: def sort012(self,arr,n): arr=arr.sort() return arr

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