add: map exercises and quiz

22-maps/exercises/02-populate/main.go

@@ -0,0 +1,65 @@
+package main
+
+// ---------------------------------------------------------
+// EXERCISE: Populate and Lookup
+//
+//  Add elements to the maps that you've declared in the
+//  first exercise, and try them by looking up for the keys.
+//
+//  Use map literals.
+//
+//  After completing the exercise, remove the data and check
+//  that your program still works.
+//
+//
+//  1. Phone numbers by last name
+//     --------------------------
+//     bowen  202-555-0179
+//     dulin  03.37.77.63.06
+//     greco  03489940240
+//
+//     Print the dulin's phone number.
+//
+//
+//  2. Product availability by Product ID
+//     ----------------
+//     617841573 true
+//     879401371 false
+//     576872813 true
+//
+//     Is Product ID 879401371 available?
+//
+//
+//  3. Multiple phone numbers by last name
+//     ------------------------------------------------------
+//     bowen  [202-555-0179]
+//     dulin  [03.37.77.63.06 03.37.70.50.05 02.20.40.10.04]
+//     greco  [03489940240 03489900120]
+//
+//     What is Greco's second phone number?
+//
+//
+//  4. Shopping basket by Customer ID
+//     -------------------------------
+//     100 [617841573:4 576872813:2]
+//     101 [576872813:5 657473833:20]
+//     102 []
+//
+//     How many of 576872813 the customer 101 is going to buy?
+//                (Product ID)  (Customer ID)
+//
+//
+// EXPECTED OUTPUT
+//
+//   1. Run the solution to see the output
+//   2. Here is the output with empty maps:
+//
+//      dulin's phone number: N/A
+//      Product ID #879401371 is not available
+//      greco's 2nd phone number: N/A
+//      Customer #101 is going to buy 0 from Product ID #576872813.
+//
+// ---------------------------------------------------------
+
+func main() {
+}