例如如下的二維陣列

var arr = [][]int{
    {1, 2, 3, 4, 5, 6},
    {7, 8, 9, 10, 11, 12},
    {13, 14, 15, 16, 17, 18},
    {19, 20, 21, 22, 23, 24},
}

func printArr(arr [][]int, brow int, bcol int, row int, col int) {
	if len(arr) == 0 || row <= 0 || col <= 0 {
		return
	}
	var rowIndex = brow
	var colIndex = bcol
	for colIndex < col {
		fmt.Println(arr[rowIndex][colIndex])
		path = append(path, fmt.Sprintf("%d%d", rowIndex, colIndex))
		colIndex++
	}
	colIndex = colIndex - 1
	for rowIndex < row-1 {
		rowIndex++
		colIndex--
		fmt.Println(arr[rowIndex][colIndex])
		path = append(path, fmt.Sprintf("%d%d", rowIndex, colIndex))
	}
	for colIndex > bcol {
		colIndex--
		fmt.Println(arr[rowIndex][colIndex])
		path = append(path, fmt.Sprintf("%d%d", rowIndex, colIndex))
	}
	for rowIndex > brow+1 {
		rowIndex--
		fmt.Println(arr[rowIndex][colIndex])
		path = append(path, fmt.Sprintf("%d%d", rowIndex, colIndex))
	}
	col = col - 2
	colIndex = colIndex + 1
	row = row - 1
	printArr(arr, rowIndex, colIndex, row, col)
}