Software Engineer Coding Interview Questions

Review this list of 324 Coding Software Engineer interview questions and answers verified by hiring managers and candidates.

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Implement x to the power of n without using any built-in library.
8 months ago
Write a program to count the frequency of each character in a given text file.
7 years ago1 answer
Implement a string sorting algorithm, treating digits as numbers.
5 years ago1 answer
How would you efficiently sum up a massive number of integers?
2 years ago1 answer
Explain the filter function.
3 years ago1 answer
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Print all possible solutions to the N-Queens problem. Has video answer
2 years ago
Solve a Rummy Deck (12-card hand).
3 years ago1 answer
Implement Pascal's Triangle.
3 years ago
Merge two lists where one has empty spaces at the end.
9 months ago
What are the key concepts and operations associated with trees?
5 years ago
Given an array of children’s ratings, assign at least one candy to each child so that higher-rated children get more than their neighbors, and return the minimum total candies needed.
a year ago
Given an unsorted array, find duplicate elements in constant time, without using inbuilt functions of python.
2 years ago1 answer
Given two dates, return the number of days between them.
2 years ago
Given a string of digits from 2 to 9 and the classic phone keypad mapping, return all possible letter combinations the number could represent.
8 months ago
Implement Markov chain.
4 months ago
Given 2 strings, return the longest common substring.
2 years ago1 answer
3 sum
2 years ago
Given a graph with N nodes and M edges, identify its network topology. Return 1 for Bus (linear chain), 2 for Star (one central node), 3 for Ring (circular), or -1 if none match.
2 years ago1 answer
Implement an in-place merge of two sorted arrays.
a year ago
Develop a custom data structure with O(1) time complexity for get() and setall() operations.
2 years ago

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Software Engineer Coding Interview Questions

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

Write a program to count the frequency of each character in a given text file.

Implement a string sorting algorithm, treating digits as numbers.

How would you efficiently sum up a massive number of integers?

Explain the filter function.

Print all possible solutions to the N-Queens problem. Has video answer

Solve a Rummy Deck (12-card hand).

Implement Pascal's Triangle.

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

What are the key concepts and operations associated with trees?

Given an array of children’s ratings, assign at least one candy to each child so that higher-rated children get more than their neighbors, and return the minimum total candies needed.

Given an unsorted array, find duplicate elements in constant time, without using inbuilt functions of python.

Given two dates, return the number of days between them.

Given a string of digits from 2 to 9 and the classic phone keypad mapping, return all possible letter combinations the number could represent.

Implement Markov chain.

Given 2 strings, return the longest common substring.

3 sum

Given a graph with N nodes and M edges, identify its network topology. Return 1 for Bus (linear chain), 2 for Star (one central node), 3 for Ring (circular), or -1 if none match.

Implement an in-place merge of two sorted arrays.

Develop a custom data structure with O(1) time complexity for get() and setall() operations.

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