Type like pro

# Print matrix spiral

## Problem

Print a matrix in spiral fashion.

## Solution

We will first print the periphery of the matrix by the help of 4 for loops. Then recursively call this function to do the same thing with inner concentric rectangles. We will pass this information by a variable named depth, which will tell how many layers from outside should be ignored.

## Code

```public class PrintMatrixSpiral
{
public static void main(String[] args)
{
int[][] matrix =
{
{ 3, 4, 5, 6, 2, 5 },
{ 2, 4, 6, 2, 5, 7 },
{ 2, 5, 7, 8, 9, 3 },
{ 2, 4, 7, 3, 5, 8 },
{ 6, 4, 7, 3, 5, 7 } };

printSpiral(matrix);
}

public static void printSpiral(int[][] matrix)
{
printSpiral(matrix, 0);
}

private static void printSpiral(int[][] matrix, int depth)
{
if (matrix == null && matrix.length == 0)
return;
int rows = matrix.length;
int cols = matrix[0].length;
if (2 * depth > Math.min(rows, cols))
return;
for (int i = depth; i < cols - depth - 1; ++i)
{
System.out.print(matrix[depth][i] + ",");
}
for (int i = depth; i < rows - depth - 1; ++i)
{
System.out.print(matrix[i][cols - depth - 1] + ",");
}
for (int i = rows - depth; i > depth; --i)
{
System.out.print(matrix[rows - depth - 1][i] + ",");
}
for (int i = rows - depth - 1; i > depth; --i)
{
System.out.print(matrix[i][depth] + ",");
}
printSpiral(matrix, ++depth);
}
}
```