View difference between Paste ID: Z4xCQTpy and ptkjrfTb

-class ListNode{
+package ch.claude_martin;
-	int value;
+
-	ListNode next;
+import java.util.Arrays;
-	ListNode(int val){
+
-		value = val;
+class SinglyLinkedList {
-		next = null;
+	private static class ListNode {
 		int value;
 		ListNode next;
 
-public class Solution{
+		ListNode(int val) {
 			value = val;
-	static ListNode makeList(int size){
+			next = null;
-		ListNode head = new ListNode(1);
+
-		ListNode prev = head;
+
 
-		for(int i=2;i<=size;++i){
+	private ListNode head;
-			ListNode current = new ListNode(i);
+
-			prev.next = current;
+	public SinglyLinkedList(ListNode head) {
 		this.head = head;
-		}
+
 
-		return head;
+	/**
 	 * 1→2→3→4→5→␀
 	 */
-	static ListNode reverseList(ListNode head){
+	static SinglyLinkedList makeList(int... values) {
-		ListNode prev = null,current=head,next_node = null;
+		ListNode head = null, prev = null;
 
-		while(current != null){
+		for (int v : values) {
-			next_node = current.next;
+			ListNode current = new ListNode(v);
-			current.next = prev;
+			if (prev != null)
 				prev.next = current;
-			current = next_node;
+			else head = current;
 			prev = current;
 		}
-		return prev;
+
 		return new SinglyLinkedList(head);
 	}
-	static void printList(ListNode head){
+
-		System.out.println();
+	public void reverseList() {
-		while(head != null){
+		reverseListResursive(head, head);
-			System.out.print(head.value + "-->");
+
-			head = head.next;
+
 	private void reverseListResursive(final ListNode head, final ListNode node) {
-		System.out.print("NULL\n");
+		final ListNode next = node.next;
 		if (next != null) {
 			if (next.next == null) {
-	public static void main(String[] args){
+				head.next.next = next;
-		ListNode head = makeList(Integer.parseInt(args[0]));
+				head.next = node;
-		printList(head);
+			}
-		head = reverseList(head);
+			reverseListResursive(head, next);
-		printList(head);
+			if (node != head && next.next != null)
 				next.next = node;
 		} else {
 			final int value = node.value;
 			node.value = head.value;
 			head.value = value;
 		}
 	}
 
 	public void printList() {
 		printList(this.head);
 	}
 
 	static void printList(ListNode head) {
 		if (head == null)
 			System.out.println('␀');
 		else {
 			System.out.print(head.value);
 			System.out.print('→');
 			printList(head.next);
 		}
 	}
 }
 
 public class Solution {
 	public static void main(String[] args) {
 		SinglyLinkedList list = SinglyLinkedList.makeList(Arrays.stream(args).mapToInt(Integer::parseInt).toArray());
 		list.printList();
 		list.reverseList();
 		list.printList();
 	}
 }