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A binary array is an array consisting of only 0s and 1s.

You are given a binary array "arr" of size ‘N’. Your task is to sort the given array and return this array after sorting.

Detailed explanation

```
2
3
0 1 0
4
0 0 0 1
```

```
0 0 1
0 0 0 1
```

```
Test case 1:
The sorted array is 0 0 1
Test case 2:
The array is already sorted.
```

```
2
1
0
2
1 0
```

```
0
0 1
```

```
Test case 1:
The array is already sorted
Test case 2:
The sorted array is 0 1.
```