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Hard

two missing featured

Article

Coding Interview Question: Two Missing Numbers

Coding Interview Question: Given an array containing all the numbers from 1 to n except two, find the two missing numbers. Click for the solution.
Random Linked List: Coding Interview Question

Article

Coding Interview Question: Random Linked List

Coding Interview Question: Given a linked list where each node has two pointers, one to the next node and one to a random node in the list, clone the list.
Big Integer Mod: Coding Interview Question

Article

Coding Interview Question: Big Int Modulus

Coding Interview Question: Given a list of bytes a, each representing one byte of a larger integer, and an integer b, find a % b. Click for the solution.
Sum: Coding Interview Question

Article

Coding Interview Question: Sum

Coding Interview Question: Given two integers, write a function to sum the numbers without using any arithmetic operators. Click for the solution.
Reverse Stack: Coding Interview Question

Article

Coding Interview Question: Reverse Stack

Coding Interview Question: Given a stack, reverse the items without creating any additional data structures. Click for the solution.
N Stacks: Coding Interview Question

Article

Coding Interview Question: N Stacks

Coding Interview Question: Implement N > 0 stacks using a single array to store all stack data. Click for the solution.
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