Coding Interview Questions

Review this list of 490 Coding interview questions and answers verified by hiring managers and candidates.

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What are virtual functions?
2 years ago2 answers
Explain callback functions.
2 years ago1 answer
Find the common ancestors in a tree. Has video answer
7 months ago
Debug a metric that was off by x percentage.
5 years ago1 answer
Given an integer n, return the number of steps to reach 1 following these rules: if n is even, divide by 2; if odd, multiply by 3 and add 1.
2 years ago1 answer
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Explain the sort function.
3 years ago3 answers
List the Differences Between Two Strings
3 years ago2 answers
Implement a JavaScript function for Promise.all().
3 years ago1 answer
Determine a ship's capacity to ship packages in D days.
3 years 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 lowest common ancestor (LCA) of two nodes in a binary tree.
+2a year ago9 answers
Find the shortest path in a graph.
3 months ago3 answers
Basic Calculator II
+18 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
Find Customers by Department
2 years ago4 answers
Find all permutations of a given string.
5 years ago2 answers
Coin Change
+16 months ago12 answers
Given a Directed Acyclic Graph (DAG), write a function to return the length of the longest path.
2 months ago
Calculate the minimum number of turns required to open a lock. Has video answer
Traverse a matrix or grid to find the shortest path between point A and point B.
8 months ago

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Coding Interview Questions

What are virtual functions?

Explain callback functions.

Find the common ancestors in a tree. Has video answer

Debug a metric that was off by x percentage.

Given an integer n, return the number of steps to reach 1 following these rules: if n is even, divide by 2; if odd, multiply by 3 and add 1.

Explain the sort function.

List the Differences Between Two Strings

Implement a JavaScript function for Promise.all().

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

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 lowest common ancestor (LCA) of two nodes in a binary tree.

Find the shortest path in a graph.

Basic Calculator II

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

Find Customers by Department

Find all permutations of a given string.

Coin Change

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

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

Traverse a matrix or grid to find the shortest path between point A and point B.

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