Merge pull request #2 from codedex-io/add-solutions-ch-4

Add solutions for JS Ch. 4: Loops

Author: Dusch4593

4-loops/18-duck-duck-goose.js

@@ -0,0 +1,11 @@
+// Duck Duck Goose 🪿
+// Codédex
+
+let randomNumber = Math.floor(Math.random() * 10);
+
+while (randomNumber != 7) {
+  console.log("Duck 🦆");
+  randomNumber = Math.floor(Math.random() * 10);
+}
+
+console.log("Goose! 🪿");

4-loops/19-lucky-number.js

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+// Lucky Number 🍀
+// Codédex
+
+const luckyNumber = Math.floor(Math.random() * 10) + 1;
+let guess = Math.floor(Math.random() * 10) + 1;
+
+while (guess != luckyNumber) {
+  console.log(`${guess} is not it.`)
+  let guess = Math.floor(Math.random() * 10) + 1;
+}
+
+console.log(`You got it! The lucky number was ${luckyNumber}`);

4-loops/20-i-solemnly-swear.js

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+// I Solemnly Swear 🗺️
+// Codédex
+
+for (let i = 0; i < 100; i++) {
+  console.log("I Solemnly Swear That I Am Up To No Good");
+}
+
+console.log("We Are Proud To Present The World of Programming!");

4-loops/21-even-the-odds.js

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+// Even The Odds 2️⃣
+// Codédex
+
+for (let i = 1; i <= 50; i++) {
+  if (i % 2 == 1) {
+    continue;
+  } else if (i == 42) {
+    console.log(i);
+    break;
+  } else {
+    console.log(i);
+  }
+}

4-loops/22-based-numbers.js

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+// Based Numbers ⫴
+// Codédex
+
+const myNumber = 30;
+let binary = "";
+
+// With for loop
+for (let i = myNumber; i >= 1 ; i = Math.floor(i/2)) {
+  if (i % 2 == 0) {
+    binary = "0" + binary
+  } else {
+    binary = "1" + binary;
+  }
+}
+
+// With while loop
+while (myNumber >= 1) {
+  if (i % 2 == 0) {
+    binary = "0" + binary;
+  } else {
+    binary = "1" + binary;
+  }
+  
+  i = Math.floor(i/2);
+}