reverse list

Author: manju07

Data-Structure/LinkedList/singlyLinkedList/reverseList.js

@@ -0,0 +1,36 @@
+class Node {
+    constructor(data) {
+        this.data = data;
+        this.next = null;
+    }
+}
+
+function reverseList(list) {
+    let currentNode = null,
+        nextNode = null;
+    while (list != null) {
+        nextNode = list.next;
+        list.next = currentNode;
+        currentNode = list;
+        list = nextNode;
+    }
+    return currentNode;
+}
+
+function displayList(list) {
+    let output = ''
+    while (list != null) {
+        output += list.data + ' ';
+        list = list.next;
+    }
+    console.log(output);
+}
+
+let list = new Node(1);
+list.next = new Node(2);
+list.next.next = new Node(3);
+list.next.next.next = new Node(4);
+list.next.next.next.next = new Node(5);
+list.next.next.next.next.next = new Node(6);
+let head = reverseList(list);
+displayList(head);