Code Review: Linked List Class with errors/flaws. You need to find them and fix.
Design: Design an mp3 player.
Data Structures: How to reverse a string (using O(1) memory)? Find nth to last node on a linked list? Balance a binary tree? There's only one duplicate item in the array, how would you find it?
The interviewer for the code review round realized towards the end that he forgot to give me a page that contained code.

Question

Code Review: Linked List Class with errors/flaws. You need to find them and fix.
Design:  Design an mp3 player.
Data Structures: How to reverse a string (using O(1) memory)? Find nth to last node on a linked list? Balance a binary tree? There's only one duplicate item in the array, how would you find it?
The interviewer for the code review round realized towards the end that he forgot to give me a page that contained code.

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