--update: addAtEnd()

Author: ashokdey

src/_DataStructures_/LinkedList/LinkedList.test.js

@@ -40,6 +40,15 @@ describe('Data Structures: Linked Lists', () => {
       expect(list.head.data).toEqual(15);
     });
 
+    it('Should add element at end using list.addAtEnd()', () => {
+      list.addAtEnd(12);
+      expect(list.head.data).toEqual(12);
+
+      list.addAtEnd(15);
+      expect(list.head.data).toEqual(12);
+      expect(list.head.next.data).toEqual(15);
+    });
+
     it('Should return the present size of the list using list.length()', () => {
       expect(list.length()).toEqual(0);
       list.addAtBeginning(1);

src/_DataStructures_/LinkedList/index.js

@@ -21,6 +21,22 @@ class LinkedList {
     }
   }
 
+  addAtEnd(element) {
+    const node = new Node(element, null);
+
+    if (!this.head) {
+      this.head = node;
+    } else {
+      let address = this.head;
+
+      while (address.next) {
+        address = address.next;
+      }
+
+      address.next = node;
+    }
+  }
+
   length() {
     let address = this.head;
     let count = 0;