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Junior Software Developer Interview Questions

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4,368 junior software developer interview questions shared by candidates

Write a function to find the first non-repeating character in a string. How would you implement a queue using two stacks? Design a URL shortener like Bitly. Explain how you would store URLs, handle collisions, and scale the system. Here’s a piece of code. It doesn’t compile/run as expected. Can you identify and fix the issue? Can you describe a challenging project you worked on, how you approached it, and the outcome? Explain the difference between depth-first search (DFS) and breadth-first search (BFS). When would you use each? What are the differences between let, const, and var in JavaScript?
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Junior Software Developer

Interviewed at SAP

4.2★
Jan 13, 2025

Write a function to find the first non-repeating character in a string. How would you implement a queue using two stacks? Design a URL shortener like Bitly. Explain how you would store URLs, handle collisions, and scale the system. Here’s a piece of code. It doesn’t compile/run as expected. Can you identify and fix the issue? Can you describe a challenging project you worked on, how you approached it, and the outcome? Explain the difference between depth-first search (DFS) and breadth-first search (BFS). When would you use each? What are the differences between let, const, and var in JavaScript?

Three people got a red or green sticker on their forehead, they were asked to raise their hand if they see at least one green sticker, and if they realized to be having green sticker to lower the hand. They soon realized they all have green stickers, how come they knew ?
avatar

Junior Software Developer

Interviewed at Intel Corporation

3.9★
Oct 3, 2023

Three people got a red or green sticker on their forehead, they were asked to raise their hand if they see at least one green sticker, and if they realized to be having green sticker to lower the hand. They soon realized they all have green stickers, how come they knew ?

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