Questions tagged [interview-questions]
This tag is for questions that came up in an interview.
965 questions
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C++ std::optional implementation for tech interview
I'm preparing for entry-level C++ developer interview and decided to implement some of std:: members. Here's my implementation of std::optional. I would be grateful ...
- 101
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votes
3
answers
238
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Java exceptions that show the message when converted to String
I’m working with custom exceptions in Java for stack operations. However, I’m unsure if the exception handling is being handled properly, especially in terms of how exceptions are thrown and caught. ...
- 11
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1
answer
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File list and monitor
I recently was given a take home assignment for a job interview. The task was specified like so:
...
- 141
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2
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255
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Tetris logic for interview
I would appreciate feedback on the code below which I created during an one-hour live interview session. In particular, while the interviewer pretty much said nothing during the interview, their ...
- 53
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2
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694
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Thread-safe write-efficient register() method for a Load balancer
The code below was written for an interview question of designing a load balancer with only a register() method.
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8
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Counting Occurrences of a Specific 3-Bit Pattern in a Byte Array
I was asked this problem in an interview, and this is the solution I came up with. I was told it's not the most efficient solution, but I can't think of any other solution. This is the problem.
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- 133
4
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4
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242
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Reversing string in PHP
I got this task to evaluate my knowledges in PHP.
I was asked to avoid using functions like strrev() or array_reverse().
...
Stacanovist
2
votes
2
answers
173
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A thread-safe performant Money Transfer API in Java
This is a popular interview question. It is meant to be done within 30 minutes. The task is to implement a thread-safe performant Bank Account API that allows to transfer, deposit, withdraw and check ...
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A thread-safe performant URL Shortener in Java
This is a popular interview question. It is meant to be done within 45 minutes. The task is to implement a thread-safe performant in-memory URL Shortener.
My implementation is based on two maps that ...
- 343
5
votes
1
answer
545
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Create an address self-complete bar
I recently received the following code challenge in connection with a job interview. After submitting, I was rejected. I want to know what (if anything) I could have done better here.
Task
Your task ...
- 201
5
votes
1
answer
297
views
String character changes (case insensitive) - Go
I saw this question on one of the socials, presented as an Apple interview question. I have had to paraphrase as it was not given in text format. (Credit: Instagram @greghogg5)
Given a string (S) ...
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4
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1
answer
223
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Last Stone Weight Problem in Haskell using list `insert`
Background
Saw this problem on TheJobOverflow which seems to be a LeetCode question.
It bothered me that the "challenge" of this problem was to recognize the need for a specific data-type (...
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4
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Simple Key Value Database using C
I was recently doing an assignment for a job interview, which asked to create a simple key value database with 4 command line operations:
create key value: Adds a key value pair/updates an existing ...
- 111
3
votes
3
answers
290
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Extracting records from a 2D List of strings
Recently I had an interview question about extracting records that matched certain criteria from a 2D List of strings. The premise was a CSV file was parsed into a ...
- 131
2
votes
1
answer
140
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Simple Curry function
This is a interview practice question from BFE.dev.
Currying is a useful technique used in JavaScript applications.
Please implement a curry() function, which ...
