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Data Structures for Coding Interviews in JavaScript

Solution: Return the Nth Node from End

Explore two methods to return the nth node from the end of a linked list, including a double iteration approach and a two-pointer technique. Understand their step-by-step algorithms, JavaScript implementations, and time and space complexity for better coding interview preparation.

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Statement

Given the head of a linked list, return the nthn^{th} node from the end of the linked list.

Constraints:

  • The number of nodes in the list is kk.

  • 1≤1 \leq kk ≤103 \leq 10^3

  • −103≤-10^3\le ...