task 4

BottomSecurePRNG.java

@@ -0,0 +1,67 @@
+/*
+ * TASK 4
+ * archived at https://git.femboy.science/femsci/ppj/src/branch/task/4
+ * by femsci
+ */
+
+// bsprng reference to femsci/bottompass 🥺
+
+public class BottomSecurePRNG {
+
+    public static void main(String[] args) {
+
+        // tight or loose? choose one...
+
+        System.out.println("Loosely coupled generator:\n=================");
+        // loosely coupled <3
+        looseCouplingUwU();
+        System.out.println("=================\n");
+
+        System.out.println("Tightly coupled generator:\n=================");
+        // tightly coupled >.<
+        tightCouplingඬϖඬ();
+        System.out.println("=================\n");
+
+    }
+
+    private static void tightCouplingඬϖඬ() {
+        // meow~
+
+        for (byte __ = 0; __ < 5; ++__) {
+            int colourVal = (int) (Math.random() * 4 + 1), rankVal = (int) (Math.random() * 13 + 2);
+
+            String colour = switch (colourVal) {
+                case 1 -> "Spade";
+                case 2 -> "Club";
+                case 3 -> "Diamond";
+                case 4 -> "Heart";
+                default -> throw new IllegalArgumentException("Invalid colour value: " + rankVal);
+            };
+
+            String rank = switch (rankVal) {
+                case 2 -> "Deuce";
+                case 3 -> "Trey";
+                case 4 -> "Four";
+                case 5 -> "Five";
+                case 6 -> "Six";
+                case 7 -> "Seven";
+                case 8 -> "Eight";
+                case 9 -> "Nine";
+                case 10 -> "Ten";
+                case 11 -> "Jack";
+                case 12 -> "Queen";
+                case 13 -> "King";
+                case 14 -> "Ace";
+                default -> throw new IllegalArgumentException("Invalid rank value: " + rankVal);
+            };
+
+            System.out.printf("%s of %ss\n", rank, colour);
+        }
+    }
+
+    private static void looseCouplingUwU() {
+        for (byte __ = 0; __ < 5; ++__) {
+            System.out.println(Card.random().getCardString());
+        }
+    }
+}

Card.java

@@ -0,0 +1,69 @@
+/*
+ * TASK 4
+ * archived at https://git.femboy.science/femsci/ppj/src/branch/task/4
+ * by femsci
+ */
+
+import java.util.Arrays;
+
+public class Card {
+    public Card(Colour colour, Rank rank) {
+        this.colour = colour;
+        this.rank = rank;
+    }
+
+    public static Card fromRaw(int colour, int rank) {
+        return new Card(Colour.from(colour), Rank.from(rank));
+    }
+
+    public static Card random() {
+        return fromRaw((int) (Math.random() * 4 + 1), (int) (Math.random() * 13 + 2));
+    }
+
+    private Colour colour;
+    private Rank rank;
+
+    public String getCardString() {
+        return String.format("%s of %ss", rank.getName(), colour.getName());
+    }
+
+    protected enum Colour {
+        SPADE(1), CLUB(2), DIAMOND(3), HEART(4);
+
+        private int raw;
+
+        Colour(int c) {
+            raw = c;
+        }
+
+        public static Colour from(int colour) {
+            // modification-proof mapping
+            return Arrays.stream(Colour.values()).filter(c -> c.raw == colour).findFirst().orElseThrow();
+        }
+
+        public String getName() {
+            return String.format("%s%s", name().charAt(0), name().substring(1).toLowerCase());
+        }
+    }
+
+    protected enum Rank {
+        DEUCE(2), TREY(3), FOUR(4), FIVE(5),
+        SIX(6), SEVEN(7), EIGHT(8), NINE(9), TEN(10),
+        JACK(11), QUEEN(12), KING(13), ACE(14);
+
+        private int raw;
+
+        Rank(int c) {
+            raw = c;
+        }
+
+        public static Rank from(int rank) {
+            // modification-proof mapping
+            return Arrays.stream(Rank.values()).filter(r -> r.raw == rank).findFirst().orElseThrow();
+        }
+
+        public String getName() {
+            return String.format("%s%s", name().charAt(0), name().substring(1).toLowerCase());
+        }
+    }
+}

README.md

@@ -1,6 +1,5 @@
 # PPJ
 
-This repository exists to archive PJATK tasks for the PPJ curriculum.
+This branch contains the solution for the **4th task**.
 
-Each task can be found under its **corresponding branch**: `task/n`.  
+[Go back to main](/femsci/ppj/src/branch/nya)
-Example: `task/2`.