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End Developer Junior Front Interview Questions

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15,883 end developer junior front interview questions shared by candidates

If you go to amazon.com website, you'll see that there is a section which shows you the top selling items in amazon. Write an algorithm that mimics the same. For example, you have 10 items and each has number of sales increasing randomly per second. Use the right data structure and algorithm to host the top selling item.
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Senior Front End Engineer

Interviewed at Amazon

3.5★
Nov 9, 2017

If you go to amazon.com website, you'll see that there is a section which shows you the top selling items in amazon. Write an algorithm that mimics the same. For example, you have 10 items and each has number of sales increasing randomly per second. Use the right data structure and algorithm to host the top selling item.

We are given an array asteroids of integers representing asteroids in a row. For each asteroid, the absolute value represents its size, and the sign represents its direction (positive meaning right, negative meaning left). Each asteroid moves at the same speed. Find out the state of the asteroids after all collisions? If two asteroids meet, the smaller one will explode. If both are the same size, both will explode. Two asteroids moving in the same direction will never meet.
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Front End Developer

Interviewed at Amazon

3.5★
Jul 13, 2025

We are given an array asteroids of integers representing asteroids in a row. For each asteroid, the absolute value represents its size, and the sign represents its direction (positive meaning right, negative meaning left). Each asteroid moves at the same speed. Find out the state of the asteroids after all collisions? If two asteroids meet, the smaller one will explode. If both are the same size, both will explode. Two asteroids moving in the same direction will never meet.

1. Behavior Question - Customer facing conflict, how did you solve it, what did you learn from it. Tell me about a time you had less time to achieve goal and how you did it, 2. CSS box model, Javascript closures etc 3. Programming question - Tic Tac Toe using html, javascript and css.
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Front End Engineer

Interviewed at Amazon

3.5★
Nov 6, 2020

1. Behavior Question - Customer facing conflict, how did you solve it, what did you learn from it. Tell me about a time you had less time to achieve goal and how you did it, 2. CSS box model, Javascript closures etc 3. Programming question - Tic Tac Toe using html, javascript and css.

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