Junior Fullstack Developer Interview Questions

3,997 junior fullstack developer interview questions shared by candidates

1. You are given an integer array coins representing coins of different denominations and an integer amount representing a total amount of money. Return the fewest number of coins that you need to make up that amount. If that amount of money cannot be made up by any combination of the coins, return -1. You may assume that you have an infinite number of each kind of coin.
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Fullstack Developer

Interviewed at Testpress

3.9
Jun 30, 2025

1. You are given an integer array coins representing coins of different denominations and an integer amount representing a total amount of money. Return the fewest number of coins that you need to make up that amount. If that amount of money cannot be made up by any combination of the coins, return -1. You may assume that you have an infinite number of each kind of coin.

3) Explain ALL OOPS Concepts with real-world example. 4) Now CODE those examples and implement those OOPS Concept [ eg: i explain OOPs using Keyboard as an example.. Then ended up coding the class for keyboard. the followup questions were to implement abstraction, encapsulation on it. 5) Different types of inheritance 6) SQL questions 7) A lot of questions from your projects/Resume. (In depth)
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Fullstack Developer

Interviewed at Engati

3.5
Jul 8, 2025

3) Explain ALL OOPS Concepts with real-world example. 4) Now CODE those examples and implement those OOPS Concept [ eg: i explain OOPs using Keyboard as an example.. Then ended up coding the class for keyboard. the followup questions were to implement abstraction, encapsulation on it. 5) Different types of inheritance 6) SQL questions 7) A lot of questions from your projects/Resume. (In depth)

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