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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01 Matrix
2 years ago1 answer
List the Differences Between Two Strings
3 years ago2 answers
Find the longest palindromic subsequence using dynamic programming.
+37 months ago13 answers
Find the common ancestors in a tree. Has video answer
8 months ago
Best Meeting Point
a year ago
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Explain the sort function.
3 years ago3 answers
Find the minimum total cost to supply water to all the houses in a village. Has video answer
Find the shortest subsequence of a cyclic string S that contains all characters of a pattern k.
2 years ago1 answer
You are given m*n matrix, find if any row, column or diagonal has all boolean = True. Find for diagonals and anti diagonals at 45 degrees
a year ago
Given a collection of rooms where Alibada is in one and moves one room a day to an adjacent room, write a program to determine if you can find Alibada with the given list of rooms.
4 years ago2 answers
Find the shortest path in a graph.
4 months ago3 answers
Given a list of strings, find the number of occurrences of the second letter of the first word, and return the character and its count.
6 months ago1 answer
Determine a ship's capacity to ship packages in D days.
3 years ago
Find all permutations of a given string.
5 years ago2 answers
Remove duplicates in an array of objects.
a year ago
Given a Directed Acyclic Graph (DAG), write a function to return the length of the longest path.
2 months ago
Given an array of points on a plane (x,y), write a function to return the distance between the closest pair of points.
2 years ago1 answer
Calculate the minimum number of turns required to open a lock. Has video answer
Determine if an array of integers from 1 to n contains a duplicate in constant time and space.
2 years ago2 answers
Given a number of courses and a list of prerequisite pairs, return true or false depending on whether it is possible to finish all courses.
8 months ago

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Data Structures & Algorithms Interview Questions

01 Matrix

List the Differences Between Two Strings

Find the longest palindromic subsequence using dynamic programming.

Find the common ancestors in a tree. Has video answer

Best Meeting Point

Explain the sort function.

Find the minimum total cost to supply water to all the houses in a village. Has video answer

Find the shortest subsequence of a cyclic string S that contains all characters of a pattern k.

You are given m*n matrix, find if any row, column or diagonal has all boolean = True. Find for diagonals and anti diagonals at 45 degrees

Given a collection of rooms where Alibada is in one and moves one room a day to an adjacent room, write a program to determine if you can find Alibada with the given list of rooms.

Find the shortest path in a graph.

Given a list of strings, find the number of occurrences of the second letter of the first word, and return the character and its count.

Determine a ship's capacity to ship packages in D days.

Find all permutations of a given string.

Remove duplicates in an array of objects.

Given a Directed Acyclic Graph (DAG), write a function to return the length of the longest path.

Given an array of points on a plane (x,y), write a function to return the distance between the closest pair of points.

Calculate the minimum number of turns required to open a lock. Has video answer

Determine if an array of integers from 1 to n contains a duplicate in constant time and space.

Given a number of courses and a list of prerequisite pairs, return true or false depending on whether it is possible to finish all courses.

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