diff --git a/04week/loop.js b/04week/loop.js
index e69de29bb..3d782de0a 100644
--- a/04week/loop.js
+++ b/04week/loop.js
@@ -0,0 +1,35 @@
+let whileCounter = 1;
+let doWhileCounter = 1;
+let carsInReverse = ['Hyundai','Mercedes','Toyota','Honda'];
+let persons = {
+  firstName: "Jane",
+  lastName: "Doe",
+  birthDate: "Jan 5, 1925",
+  gender: "female"
+}
+
+for (let i=0; i<carsInReverse.length;i++){
+  console.log(carsInReverse[i]);
+}
+
+//let personsKeys = Object.keys(persons);
+for (let j in persons) {
+  console.log(j);
+}
+
+for (let k in persons) {
+  if (k==='birthDate'){
+    console.log(persons[k]);
+    break;
+  }
+}
+
+while (whileCounter<5){
+  console.log(whileCounter);
+  whileCounter++;
+}
+
+do {
+  console.log(doWhileCounter);
+  doWhileCounter++;
+} while (doWhileCounter < 5);