DSA swap node pair leetcode problem error
public ListNode swapPairs(ListNode node) { ListNode head = node; ListNode cur = node; while (head != null && head.next != null) { head = reverseList(head, 0); head.next = cur.next.next; head = head.next; cur = head; } return node; } public ListNode reverseList(ListNode node, int counter) { if (counter == 1 || node == null || […]
DSA swap node pair leetcode problem error
public ListNode swapPairs(ListNode node) { ListNode head = node; ListNode cur = node; while (head != null && head.next != null) { head = reverseList(head, 0); head.next = cur.next.next; head = head.next; cur = head; } return node; } public ListNode reverseList(ListNode node, int counter) { if (counter == 1 || node == null || […]
DSA swap node pair leetcode problem error
public ListNode swapPairs(ListNode node) { ListNode head = node; ListNode cur = node; while (head != null && head.next != null) { head = reverseList(head, 0); head.next = cur.next.next; head = head.next; cur = head; } return node; } public ListNode reverseList(ListNode node, int counter) { if (counter == 1 || node == null || […]
DSA swap node pair leetcode problem error
public ListNode swapPairs(ListNode node) { ListNode head = node; ListNode cur = node; while (head != null && head.next != null) { head = reverseList(head, 0); head.next = cur.next.next; head = head.next; cur = head; } return node; } public ListNode reverseList(ListNode node, int counter) { if (counter == 1 || node == null || […]
DSA swap node pair leetcode problem error
public ListNode swapPairs(ListNode node) { ListNode head = node; ListNode cur = node; while (head != null && head.next != null) { head = reverseList(head, 0); head.next = cur.next.next; head = head.next; cur = head; } return node; } public ListNode reverseList(ListNode node, int counter) { if (counter == 1 || node == null || […]
DSA swap node pair leetcode problem error
public ListNode swapPairs(ListNode node) { ListNode head = node; ListNode cur = node; while (head != null && head.next != null) { head = reverseList(head, 0); head.next = cur.next.next; head = head.next; cur = head; } return node; } public ListNode reverseList(ListNode node, int counter) { if (counter == 1 || node == null || […]