Physical Address

304 North Cardinal St.
Dorchester Center, MA 02124

Remove Nth Node From End of List LeetCode Solution

Problem – Remove Nth Node From End of List

Given the head of a linked list, remove the nth node from the end of the list and return its head.

Example 1:

Input: head = [1,2,3,4,5], n = 2
Output: [1,2,3,5]

Example 2:

Input: head = [1], n = 1
Output: []

Example 3:

Input: head = [1,2], n = 1
Output: [1]

Constraints:

  • The number of nodes in the list is sz.
  • 1 <= sz <= 30
  • 0 <= Node.val <= 100
  • 1 <= n <= sz

Remove Nth Node From End of List LeetCode Solution in Python

class Solution:
    def removeNthFromEnd(self, head: ListNode, n: int) -> ListNode:
        fast, slow = head, head
        for _ in range(n): fast = fast.next
        if not fast: return head.next
        while fast.next: fast, slow = fast.next, slow.next
        slow.next = slow.next.next
        return head

Remove Nth Node From End of List LeetCode Solution in Java

class Solution {
    public ListNode removeNthFromEnd(ListNode head, int n) {
        ListNode fast = head, slow = head;
        for (int i = 0; i < n; i++) fast = fast.next;
        if (fast == null) return head.next;
        while (fast.next != null) {
            fast = fast.next;
            slow = slow.next;
        }
        slow.next = slow.next.next;
        return head;
    }
}

Remove Nth Node From End of List LeetCode Solution in C++

class Solution {
public:
    ListNode* removeNthFromEnd(ListNode* head, int n) {
        ListNode *fast = head, *slow = head;
        for (int i = 0; i < n; i++) fast = fast->next;
        if (!fast) return head->next;
        while (fast->next) fast = fast->next, slow = slow->next;
        slow->next = slow->next->next;
        return head;
    }
};
Remove Nth Node From End of List LeetCode Solution Review:

In our experience, we suggest you solve this Remove Nth Node From End of List LeetCode Solution and gain some new skills from Professionals completely free and we assure you will be worth it.

If you are stuck anywhere between any coding problem, just visit Queslers to get the Remove Nth Node From End of List LeetCode Solution

Find on LeetCode

Conclusion:

I hope this Remove Nth Node From End of List LeetCode Solution would be useful for you to learn something new from this problem. If it helped you then don’t forget to bookmark our site for more Coding Solutions.

This Problem is intended for audiences of all experiences who are interested in learning about Data Science in a business context; there are no prerequisites.

Keep Learning!

More Coding Solutions >>

LeetCode Solutions

Hacker Rank Solutions

CodeChef Solutions

Leave a Reply

Your email address will not be published. Required fields are marked *