# Print matrix in spiral of matrix in kotlin

Kotlin program for Spiral traversal of matrix. Here problem description and other solutions.

``````// Kotlin program
// Spiral form of 2d array
class SpiralView
{
fun spiral(data: Array < Array < Int >> ,
startRow: Int, startCol: Int,
endRow: Int, endCol: Int,
element1: Int): Unit
{
var i: Int = startCol;
var element: Int = element1;
// Left to right
while (i <= endCol && element > 0)
{
element -= 1;
print("  " + data[startRow][i]);
i += 1;
}
i = startRow + 1;
// Top to down
while (i <= endRow && element > 0)
{
element -= 1;
print("  " + data[i][endCol]);
i += 1;
}
i = endCol - 1;
// Bottom right to bottom-left
while (i >= startCol && element > 0)
{
element -= 1;
print("  " + data[endRow][i]);
i -= 1;
}
i = endRow - 1;
// Bottom left to top
while (i > startRow && element > 0)
{
element -= 1;
print("  " + data[i][startRow]);
i -= 1;
}
if (startRow + 1 <= endRow - 1 && element > 0)
{
// Recursive call
this.spiral(data, startRow + 1,
startCol + 1, endRow - 1,
endCol - 1, element);
}
}
}
fun main(args: Array < String > ): Unit
{
// 2d matrix
val matrix: Array < Array < Int >> = arrayOf(
arrayOf(1, 2, 3, 4, 5, 6),
arrayOf(22, 23, 24, 25, 26, 7),
arrayOf(21, 36, 37, 38, 27, 8),
arrayOf(20, 35, 42, 39, 28, 9),
arrayOf(19, 34, 41, 40, 29, 10),
arrayOf(18, 33, 32, 31, 30, 11),
arrayOf(17, 16, 15, 14, 13, 12)
);
val row: Int = matrix.count();
val col: Int = matrix.count();
// Get the number of element
val element: Int = row * col;
task.spiral(matrix, 0, 0, row - 1, col - 1, element);
}``````

Output

``  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42`` ## Comment

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