task 2

src/imagefilters/ImageFilters.scala

@@ -6,8 +6,14 @@ package imagefilters
 object ImageFilters {
 
   def duplicate(a: Array[Array[Int]]): Array[Array[Int]] = {
-
-    /* TODO: Write your code hereunder */
-    return Array.empty
+    val height: Int = a.length
+    val width: Int = if (height == 0) 0 else a(0).length
+    val res: Array[Array[Int]] = Array.ofDim(height, width)
+    for (y: Int <- 0 until height) {
+      for (x: Int <- 0 until width) {
+        res(y)(x) = a(y)(x)
+      }
+    }
+    return res
   }
 }