Add: basic script that rotates a 2D slice clockwise

rotateSlice.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"fmt"
+)
+
+// rotate90Clockwise rotates the given 2D slice 90 degrees clockwise
+func rotate90Clockwise(matrix [][]int) [][]int {
+	n := len(matrix)
+	if n == 0 {
+		return matrix
+	}
+	m := len(matrix[0])
+
+	// Create a new 2D slice to hold the rotated matrix
+	rotated := make([][]int, m)
+	for i := range rotated {
+		rotated[i] = make([]int, n)
+	}
+
+	// Perform the rotation
+	for i := 0; i < n; i++ {
+		for j := 0; j < m; j++ {
+			rotated[j][n-i-1] = matrix[i][j]
+		}
+	}
+
+	return rotated
+}
+
+// printMatrix prints the 2D slice in a readable format
+func printMatrix(matrix [][]int) {
+	for _, row := range matrix {
+		fmt.Println(row)
+	}
+}
+
+func main() {
+	// Example 2D slice
+	matrix := [][]int{
+		{1, 2, 3},
+		{4, 5, 6},
+		{7, 8, 9},
+	}
+
+	fmt.Println("Original matrix:")
+	printMatrix(matrix)
+
+	// Rotate the matrix
+	rotatedMatrix := rotate90Clockwise(matrix)
+
+	fmt.Println("Rotated matrix:")
+	printMatrix(rotatedMatrix)
+}
+