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# Anticlockwise spiral view of diamond matrix elements in scala

Scala program for Anticlockwise spiral view of diamond matrix elements. Here more solutions.

``````/*
Scala program for
Anticlockwise spiral view of diamond element in matrix
*/
class SpiralTraversal()
{
// Method which is displaying the Anticlockwise spiral
// Of matrix in diamond(mid) element
def spiralView(matrix: Array[Array[Int]],
x: Int, y: Int, p: Int, q: Int, size: Int): Unit = {
var k: Int = size;
// Find the middle column
var midCol: Int = y + ((q - y) / 2);
// Get middle row (valid for odd square matrix)
var midRow: Int = midCol;
// Matrix are divided into 4 section
// Starting of middle row and column in form of top
// Case A
// Top to Left-bottom
var i: Int = midCol;
var j: Int = 0;
while (i > y && k > 0)
{
print("  " + matrix(x + j)(i));
i -= 1;
k -= 1;
j += 1;
}
// Case B
// Middle left to middle right bottom
i = y;
j = 0;
while (i <= midCol && k > 0)
{
print("  " + matrix((midRow) + j)(i));
i += 1;
k -= 1;
j += 1;
}
// Case C
// Middle bottom to middle right side
i = midCol + 1;
j = 1;
while (i <= q && k > 0)
{
print("  " + matrix((p) - j)(i));
i += 1;
k -= 1;
j += 1;
}
// Case D
// Middle right side to  top middle
i = q - 1;
j = 1;
while (i > midCol && k > 0)
{
print("  " + matrix((midRow) - j)(i));
i -= 1;
k -= 1;
j += 1;
}
if (x + 1 <= p - 1 && k > 0)
{
// Recursive call
spiralView(matrix, x + 1, y + 1, p - 1, q - 1, k);
}
}
def diamondAnticlockwise(matrix: Array[Array[Int]]): Unit = {
var row: Int = matrix.length;
var col: Int = matrix(0).length;
// Check whether the given matrix is a valid odd shape or not
if (row != col || col % 2 == 0)
{
// When Yes not a valid size
println("\nNot a valid perfect Odd square matrix");
return;
}
// (row*col)-((col+1)/2)*4 are provide the value of number of
// Diamond element
spiralView(matrix, 0, 0, row - 1,
col - 1, (row * col) - ((col + 1) / 2) * 4);
}
}
object Main
{
def main(args: Array[String]): Unit = {
var task: SpiralTraversal = new SpiralTraversal();
// Define matrix
var matrix: Array[Array[Int]] = Array(
Array(1, 2, 3, 4, 5),
Array(6, 7, 8, 9, 10),
Array(11, 12, -1, 15, 16),
Array(17, 18, 19, 20, 21),
Array(22, 23, 24, 25, 26)
);
}
}``````

Output

``  3  7  11  18  24  20  16  9  8  12  19  15  -1``

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