Add exercises for dead-code

Author: mshayriyesaricicek

Sprint-3/3-dead-code/exercise-1.js

@@ -0,0 +1,14 @@
+// Find the instances of unreachable and redundant code - remove them!
+// The sayHello function should continue to work for any reasonable input it's given.
+
+const greeting = "hello";
+
+function sayHello(greeting, name) {
+  return `${greeting}, ${name}!`;
+}
+
+const testName = "Aman";
+
+const greetingMessage = sayHello(greeting, testName); // only needed if want to store variable
+
+console.log(greetingMessage); // 'hello, Aman!'

Sprint-3/3-dead-code/exercise-2.js

@@ -0,0 +1,26 @@
+// Remove the unused code that does not contribute to the final console log
+// The countAndCapitalisePets function should continue to work for any reasonable input it's given, and you shouldn't modify the pets variable.
+
+const pets = ["parrot", "hamster", "horse", "dog", "hamster", "cat", "hamster"];
+const capitalisedPets = pets.map((pet) => pet.toUpperCase());
+const petsStartingWithH = pets.filter((pet) => pet[0] === "h");
+
+function logPets(petsArr) {
+  petsArr.forEach((pet) => console.log(pet));
+}
+
+function countAndCapitalisePets(petsArr) {
+  const petCount = {};
+
+  petsArr.forEach((pet) => {
+    const capitalisedPet = pet.toUpperCase();
+    if (petCount[capitalisedPet]) {
+      petCount[capitalisedPet] += 1;
+    } else {
+      petCount[capitalisedPet] = 1;
+    }
+  });
+  return petCount;
+}
+
+const countedPetsStartingWithH = countAndCapitalisePets(petsStartingWithH);