Backend Engineer Interview Questions

15,496 backend engineer interview questions shared by candidates

1st interview: right a function that receive an array of integers such that every element in the array, except one, appears even number of times. you should find the one element who appears odd number of times. the solution should be in O(n) runtime complexity and O(1) memory complexity
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Student Backend Engineer

Interviewed at Radware

3.8
Dec 26, 2019

1st interview: right a function that receive an array of integers such that every element in the array, except one, appears even number of times. you should find the one element who appears odd number of times. the solution should be in O(n) runtime complexity and O(1) memory complexity

Implement an n-ary tree. With rules: 1. If the value is in the set, keep the node 2. If the value is a parent of the value in the set, keep it 3. If the value is a part of the final tree, keep it 4. Otherwise, delete the node
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Backend Engineer

Interviewed at Nuna

2.7
Sep 27, 2022

Implement an n-ary tree. With rules: 1. If the value is in the set, keep the node 2. If the value is a parent of the value in the set, keep it 3. If the value is a part of the final tree, keep it 4. Otherwise, delete the node

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