Meta Data Structures & Algorithms Interview Questions

Review this list of 94 Meta Data Structures & Algorithms interview questions and answers verified by hiring managers and candidates.

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Find the median from a data stream.
+17 months ago3 answers
Given a head node of a linked list, delete k-th node from the end of the list.
a year ago5 answers
Maximum Profit
4 months ago34 answers
Linked List Cycle
+4a year ago23 answers
Binary Tree Zigzag Level Order Traversal
3 months ago
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Generate Parentheses Has video answer
+36 months ago19 answers
Find the maximum product of any two integers in an array.
2 years ago11 answers
Find the maximum subarray sum.
+15a month ago38 answers
Build a Calculator
+3a year ago6 answers
Construct a binary tree given its preorder and inorder traversals.
+2a month ago12 answers
Merge k sorted linked lists. Has video answer
+92 months ago15 answers
Sort a K-Messed Array
2 years ago25 answers
Given a list of strings, find all strings that encode to the same value using a Caesar Cipher. (A Caesar Cipher rotates characters, e.g. in CC3: a->d, b->e, ..., z->c)
10 months ago1 answer
Implement a circular buffer.
2 years ago4 answers
Given an array of task durations (in minutes), return the pairs of tasks that can be completed within 60 minutes. For example, for [1, 43, 20, 59, 30, 30], return [[0, 3], [4, 5]].
3 months ago2 answers
Given an array of integers, find the next greater integer for each element in the array.
a year ago
Given an array of integers and an integer k, find the kth largest element in the array.
8 months ago4 answers
Clone a linked list with a random pointer.
2 years ago
Calculate the trapped rainwater between bars in a given array.
+102 years ago19 answers
Which sorting algorithms use divide and conquer?
2 years ago2 answers

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Meta Data Structures & Algorithms Interview Questions

Find the median from a data stream.

Given a head node of a linked list, delete k-th node from the end of the list.

Maximum Profit

Linked List Cycle

Binary Tree Zigzag Level Order Traversal

Generate Parentheses Has video answer

Find the maximum product of any two integers in an array.

Find the maximum subarray sum.

Build a Calculator

Construct a binary tree given its preorder and inorder traversals.

Merge k sorted linked lists. Has video answer

Sort a K-Messed Array

Given a list of strings, find all strings that encode to the same value using a Caesar Cipher. (A Caesar Cipher rotates characters, e.g. in CC3: a->d, b->e, ..., z->c)

Implement a circular buffer.

Given an array of task durations (in minutes), return the pairs of tasks that can be completed within 60 minutes. For example, for [1, 43, 20, 59, 30, 30], return [[0, 3], [4, 5]].

Given an array of integers, find the next greater integer for each element in the array.

Given an array of integers and an integer k, find the kth largest element in the array.

Clone a linked list with a random pointer.

Calculate the trapped rainwater between bars in a given array.

Which sorting algorithms use divide and conquer?

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