slices exercise solution

exercises/slices.go

@@ -0,0 +1,24 @@
+package main
+
+// exercise link: https://go.dev/tour/moretypes/18
+
+import (
+// "golang.org/x/tour/pic" // not valid on local!
+)
+
+func Pic(dx, dy int) [][]uint8 {
+	mypic := make([][]uint8, dx)
+	for i := range mypic {
+		mypic[i] = make([]uint8, dy)
+	}
+	for i, _ := range mypic {
+		for j, _ := range mypic[i] {
+			mypic[i][j] = uint8((i*dy + j*3) % 256)
+		}
+	}
+	return mypic
+}
+
+func main() {
+	// pic.Show(Pic)
+}