Software Engineer Coding Interview Questions

Review this list of 295 Coding Software Engineer interview questions and answers verified by hiring managers and candidates.

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Design LFU cache.
3 months ago1 answer
Edit distance Has video answer
+33 months ago49 answers
Employee Earnings. Has video answer
a year ago83 answers
Implement file search
3 years ago1 answer
Reverse a linked list.
+83 months ago50 answers
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Implement an LRU cache with serialization and evolving constraints.
8 months ago
Given a string s, return true if the s can be a palindrome after deleting at most one character from it.
5 months ago7 answers
Is this a valid palindrome?
+64 months ago56 answers
Implement LRU Cache.
+252 months ago34 answers
Given an array of numbers where every number occurs twice except one, how would you find the unique number in O(log n) time?
5 months ago24 answers
Find the container with the maximum volume of water. Has video answer
2 years ago2 answers
Infection spread simulation.
2 months ago1 answer
Design a file upload feature for an AI chat application.
2 months ago1 answer
Design a banking system to facilitate account creation, deposits, transfers, and listing the most active accounts by total monetary activity, with commands entered via parsing CSV/JSON.
a year ago5 answers
Build a web crawler with multi-threading.
3 months ago
Find the longest substring without repeating characters.
+716 days ago39 answers
Code an image-processing pipeline that reads per-image instruction files and applies ordered transformations (e.g., rotate, invert, crop, convert) to large sets of images of varying sizes across multiple folders.
8 months 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 ago18 answers
Find the first missing positive number in an array.
2 years ago15 answers
Maximum Number of Visible Points
10 months ago1 answer

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Software Engineer Coding Interview Questions

Design LFU cache.

Edit distance Has video answer

Employee Earnings. Has video answer

Implement file search

Reverse a linked list.

Implement an LRU cache with serialization and evolving constraints.

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

Is this a valid palindrome?

Implement LRU Cache.

Given an array of numbers where every number occurs twice except one, how would you find the unique number in O(log n) time?

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

Infection spread simulation.

Design a file upload feature for an AI chat application.

Design a banking system to facilitate account creation, deposits, transfers, and listing the most active accounts by total monetary activity, with commands entered via parsing CSV/JSON.

Build a web crawler with multi-threading.

Find the longest substring without repeating characters.

Code an image-processing pipeline that reads per-image instruction files and applies ordered transformations (e.g., rotate, invert, crop, convert) to large sets of images of varying sizes across multiple folders.

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

Find the first missing positive number in an array.

Maximum Number of Visible Points

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