Solving Remove Nth Node From End using Two pointers.

Problem

Remove nth node from end.

Pattern

This problem demonstrates the Two pointers pattern.

Approach

Gap of n between two pointers.

Solution 

  // Solution for Remove Nth Node From End
// Pattern: Two pointers
// O(n) time

Complexity

O(n) time

Best Practices

  • Identify the pattern before coding — pattern recognition saves time
  • Handle edge cases: empty input, single element, duplicates
  • Use descriptive variable names even in timed interviews
  • Test with the provided examples plus one custom case