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Problem of the day

You are given a 2-D array 'MATRIX' of dimensions N x M, of integers. You need to return the spiral path of the matrix.

Example Of Spiral Path:

Detailed explanation

```
1 <= T <= 5
1 <= N <= 10 ^ 2
1 <= M <= 10 ^ 2
-10 ^ 9 <= MATRIX[ i ][ j ] <= 10 ^ 9
Time Limit: 1sec.
```

```
2
4 4
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
3 6
1 2 3 4 5 6
7 8 9 10 11 12
13 14 15 16 17 18
```

```
1 2 3 4 8 12 16 15 14 13 9 5 6 7 11 10
1 2 3 4 5 6 12 18 17 16 15 14 13 7 8 9 10 11
```

```
The spiral path for the test case 2 is as shown below:
```

```
2
1 1
4
1 5
1 2 3 4 5
```

```
4
1 2 3 4 5
```

```
In the first test case, there is only one element in the matrix, so the spiral path is only that element.
In the second test case, there is only one row or 1-D matrix, so the spiral path is only the single traversal of the matrix.
```