Data Structures & Algorithms Interview Questions

Review this list of 347 Data Structures & Algorithms interview questions and answers verified by hiring managers and candidates.

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Count the occurrences of the element in a sorted array.
2 years ago
Cyclic Sort
2 years ago
Given a grid of size n x n, return all the paths from top-left corner to bottom-right corner. You can only move right or down.
2 years ago
Edit distance Has video answer
+63 months ago66 answers
Design LFU cache.
10 days ago1 answer
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Alien Dictionary
a month ago
Maximum Coins From K Consecutive Bags
3 months ago
Design a priority heap.
9 months ago1 answer
Reverse a linked list.
+105 months ago67 answers
Implement file search
3 years ago1 answer
Is this a valid palindrome?
+66 months ago74 answers
Implement LRU Cache.
+2721 days ago42 answers
Given a string s, return true if the s can be a palindrome after deleting at most one character from it.
7 months ago8 answers
How would you remove duplicates in a string? Has video answer
a month ago30 answers
How would you write a KNN search using base python?
2 years ago
Find the container with the maximum volume of water. Has video answer
2 years ago3 answers
Find the longest substring without repeating characters. Has video answer
+9a month ago49 answers
Infection spread simulation.
3 months ago2 answers
Given an array of strings, return the words that can be typed using letters of the alphabet on only one row of American keyboard.
a month ago
Given an integer array nums and an integer k, return true if nums has a subarray of at least two elements whose sum is a multiple of k. Has video answer
+62 years ago24 answers

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Data Structures & Algorithms Interview Questions

Count the occurrences of the element in a sorted array.

Cyclic Sort

Given a grid of size n x n, return all the paths from top-left corner to bottom-right corner. You can only move right or down.

Edit distance Has video answer

Design LFU cache.

Alien Dictionary

Maximum Coins From K Consecutive Bags

Design a priority heap.

Reverse a linked list.

Implement file search

Is this a valid palindrome?

Implement LRU Cache.

Given a string s, return true if the s can be a palindrome after deleting at most one character from it.

How would you remove duplicates in a string? Has video answer

How would you write a KNN search using base python?

Find the container with the maximum volume of water. Has video answer

Find the longest substring without repeating characters. Has video answer

Infection spread simulation.

Given an array of strings, return the words that can be typed using letters of the alphabet on only one row of American keyboard.

Given an integer array nums and an integer k, return true if nums has a subarray of at least two elements whose sum is a multiple of k. Has video answer

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