Oct 12, 2023 · Oct 12, 2023 · Oct 12, 2023
diff --git a/Data-Structures/Linked-List/pairWiseSwap.js b/Data-Structures/Linked-List/pairWiseSwap.js
Original file line number	Diff line number	Diff line change
		@@ -1,5 +1,5 @@
	//problem link leetcode:https://leetcode.com/problems/swap-nodes-in-pairs/

	//problem link leetcode:https://leetcode.com/problems/swap-nodes-in-pairs/
		class Node {
		constructor(data) {
		this.data = data;
Expand All		@@ -20,46 +20,6 @@ class LinkedList {
		}
		}

	size() {
	return this.length;
	}

	head() {
	return this.headNode?.data ?? null;
	}

	tail() {
	return this.tailNode?.data ?? null;
	}

	isEmpty() {
	return this.length === 0;
	}

	addLast(element) {
	if (this.headNode === null) {
	return this.addFirst(element);
	}
	const node = new Node(element);
	this.tailNode.next = node;
	this.tailNode = node;
	this.length++;
	return this.size();
	}

	addFirst(element) {
	const node = new Node(element);
	if (this.headNode === null) {
	this.tailNode = node;
	}
	node.next = this.headNode;
	this.headNode = node;
	this.length++;
	return this.size();
	}

	// ... (other methods from the original code)

		pairwiseSwap() {
		let current = this.headNode;
		let prev = null;
Expand All		@@ -85,21 +45,6 @@ class LinkedList {
		this.tailNode = prev;
		}
		}

	get() {
	const list = [];
	let currentNode = this.headNode;
	while (currentNode) {
	list.push(currentNode.data);
	currentNode = currentNode.next;
	}
	return list;
	}
		}

	// Example usage:
	const linkedList = new LinkedList([1, 2, 3, 4, 5]);
	console.log("Linked List before pairwise swapping:", linkedList.get());

	linkedList.pairwiseSwap();
	console.log("Linked List after pairwise swapping:", linkedList.get());
	export { Node, LinkedList };