Remove Nth Node From End of List
Detailed guide and Python implementation for the 'Remove Nth Node From End of List' problem.
Problem Statement
Given the head of a linked list, remove the nth node from the end of the list and return its head.
The linked list is represented as a Python list. Implement a function removeNthFromEnd(head: list, n: int) -> list that returns the list after removal.
- •The number of nodes in the list is sz
- •1 <= sz <= 30
- •0 <= Node.val <= 100
- •1 <= n <= sz
Examples
[1,2,3,4,5], 2
[1,2,3,5]
The 2nd node from the end is 4. After removing it, the list becomes 1->2->3->5.
[1], 1
[]
There is only one node and we remove it, so the list becomes empty.
[1,2], 1
[1]
The 1st node from the end is 2. After removing it, the list becomes [1].
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
Ready to Solve?
Open the problem in PyRun's browser-based Python editor. Your code runs fully offline — no server required.
Recommended Python Resources
Expand your knowledge with related interactive tutorials, cheat sheets, and code comparisons.
Python Lists
Learn everything about Python lists. Discover how to create, slice, modify, and iterate through arrays in Python natively.
How to Sort a List in Python
Learn how to sort a list in Python using the sort() method and the sorted() function. Discover custom key sorting and reverse order examples.
Python List Methods
Quick reference guide for Python list operations. Master appending, inserting, removing, sorting, and slicing elements.
Python vs JavaScript: Which Programming Language is Best?
A comprehensive comparison between Python and JavaScript. Explore syntax differences, performance, use cases (backend vs frontend), and coding examples.