Posted on by Kalkicode
Code Matrix

# Spiral traversal of matrix in golang

``````package main
import "fmt"
// Go program
// Spiral form of 2d array

func spiral(data[][] int, startRow int,
startCol int, endRow int, endCol int, element int) {
//Left to right
for i := startCol ; i <= endCol && element > 0 ; i++ {
element--
fmt.Print("  ", data[startRow][i])
}
//Top to down
for i := startRow + 1 ; i <= endRow && element > 0 ; i++ {
element--
fmt.Print("  ", data[i][endCol])
}
//Bottom right to bottom-left
for i := endCol - 1 ; i >= startCol && element > 0 ; i-- {
element--
fmt.Print("  ", data[endRow][i])
}
// Bottom left to top
for i := endRow - 1 ; i > startRow && element > 0 ; i-- {
element--
fmt.Print("  ", data[i][startRow])
}
if startRow + 1 <= endRow - 1 && element > 0 {
// Recursive call
spiral(data, startRow + 1, startCol + 1,
endRow - 1, endCol - 1, element)
}
}
func main() {

// 2d matrix
var matrix = [][] int {
{1 ,  2 ,  3 ,  4 ,  5 ,  6} ,
{22 , 23 , 24 , 25 , 26 , 7} ,
{21 , 36 , 37 , 38 , 27 , 8} ,
{20 , 35 , 42 , 39 , 28 , 9} ,
{19 , 34 , 41 , 40 , 29 , 10} ,
{18 , 33 , 32 , 31 , 30 , 11} ,
{17 , 16 , 15 , 14 , 13 , 12}}
var row int = len(matrix)
var col int = len(matrix[0])
// Get the number of element
var element int = row * col
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``

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