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Spiral Matrix

Easy
0/40
Average time to solve is 15m
Contributed by

Problem statement

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 ( Input/output format, Notes, Images )
Constraints:
``````1 <= T <= 5
1 <= N  <= 10 ^ 2
1 <= M <= 10 ^ 2
-10 ^ 9 <= MATRIX[ i ][ j ] <= 10 ^ 9

Time Limit: 1sec.
``````
Sample Input 1 :
``````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
``````
Sample Output 1 :
``````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
``````
Explanation of the Sample Input 1 :
``````The spiral path for the test case 2 is as shown below:
``````

Sample Input 2 :
``````2
1 1
4
1 5
1 2 3 4 5
``````
Sample Output 2 :
``````4
1 2 3 4 5
``````
Explanation of the Sample Input 2:
``````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.
``````
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