Coding Interview Questions

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

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Explain the map function.
3 years ago2 answers
Improving Students
3 answers
Given a string S, determine if it can be converted into a palindrome by making at most one swap of two characters.
2 years ago
Given arrays of varying lengths, how would you pad them efficiently?
8 months ago
Efficiently find the next greatest element in an array.
3 years ago
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Given an array representing the height of buildings from a sea beach, return an array of heights of the buildings that have a sea view.
5 years ago1 answer
What are the different types of software testing?
2 years ago1 answer
Implement x to the power of n without using any built-in library.
7 months ago
Find the element at a given position in a sorted version of an unsorted array. Example: Input: {5,1,7,19,0,16}, k=3 Output: 5 (Explanation: Sorted array is {0,1,5,7,16,19}, and the 3rd positioned element is 5.)
4 years ago3 answers
Write a PowerShell script to detect C2 beaconing.
9 months ago
Find the dot product of two sparse vectors.
3 years ago
Given a string that doesn't fit into a machine's memory, split it at each space and count the number of spaces.
3 years ago1 answer
Sliding Window Maximum
2 years ago
Merge two lists where one has empty spaces at the end.
8 months ago
Print all words from a dictionary that can be found on a given Boggle board.
4 years ago1 answer
Determine if two words are sorted in lexicographic order.
3 years ago
Sort an array containing only 0s, 1s, and 2s.
5 years ago3 answers
Check the correct placement of parentheses in a string.
3 years ago
Invert binary tree.
2 years ago
Given an array of integers, find a tuple of three integers that can form a triangle.
3 years ago1 answer

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Coding Interview Questions

Explain the map function.

Improving Students

Given a string S, determine if it can be converted into a palindrome by making at most one swap of two characters.

Given arrays of varying lengths, how would you pad them efficiently?

Efficiently find the next greatest element in an array.

Given an array representing the height of buildings from a sea beach, return an array of heights of the buildings that have a sea view.

What are the different types of software testing?

Implement x to the power of n without using any built-in library.

Find the element at a given position in a sorted version of an unsorted array. Example: Input: {5,1,7,19,0,16}, k=3 Output: 5 (Explanation: Sorted array is {0,1,5,7,16,19}, and the 3rd positioned element is 5.)

Write a PowerShell script to detect C2 beaconing.

Find the dot product of two sparse vectors.

Given a string that doesn't fit into a machine's memory, split it at each space and count the number of spaces.

Sliding Window Maximum

Merge two lists where one has empty spaces at the end.

Print all words from a dictionary that can be found on a given Boggle board.

Determine if two words are sorted in lexicographic order.

Sort an array containing only 0s, 1s, and 2s.

Check the correct placement of parentheses in a string.

Invert binary tree.

Given an array of integers, find a tuple of three integers that can form a triangle.

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