[Sync Iteration] go/card-tricks/1

solutions/go/card-tricks/1/card_tricks.go

@@ -0,0 +1,43 @@
+package cards
+
+// FavoriteCards returns a slice with the cards 2, 6 and 9 in that order.
+func FavoriteCards() []int {
+    favCard := []int{2, 6, 9}
+    return favCard; 
+}
+
+// GetItem retrieves an item from a slice at given position.
+// If the index is out of range, we want it to return -1.
+func GetItem(slice []int, index int) int {
+	if index < 0 || index >= len(slice) {
+        return -1 
+    } else {
+        return slice[index]
+    }
+}
+
+// SetItem writes an item to a slice at given position overwriting an existing value.
+// If the index is out of range the value needs to be appended.
+func SetItem(slice []int, index, value int) []int {
+	if index < 0 || index >= len(slice) {
+        slice = append(slice, value)
+        return slice
+    } else {
+        slice[index] = value
+        return slice
+    }
+}
+
+// PrependItems adds an arbitrary number of values at the front of a slice.
+func PrependItems(slice []int, values ...int) []int {
+	return append(values, slice...)
+}
+
+// RemoveItem removes an item from a slice by modifying the existing slice.
+func RemoveItem(slice []int, index int) []int {
+	if index < 0 || index >= len(slice) {
+        return slice
+    }
+
+    return append(slice[:index], slice[index + 1:]...)
+}