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12,385 lead backend developer interview questions shared by candidates

A question on array math(moderate level) A question on strings which used map(easy level) https://www.geeksforgeeks.org/design-a-stack-that-supports-getmin-in-o1-time-and-o1-extra-space/ Reverse a linked list. Series of questions on queries(MySQL and ORM both) Print a star using Python ONLY. A question on Binary Search(Moderate level) Design backend of LUDO. Basic MCQs on HTTP, REST API, DBMS, Python.
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Backend Engineer

Interviewed at Park+ (India)

4★
May 13, 2021

A question on array math(moderate level) A question on strings which used map(easy level) https://www.geeksforgeeks.org/design-a-stack-that-supports-getmin-in-o1-time-and-o1-extra-space/ Reverse a linked list. Series of questions on queries(MySQL and ORM both) Print a star using Python ONLY. A question on Binary Search(Moderate level) Design backend of LUDO. Basic MCQs on HTTP, REST API, DBMS, Python.

Technical questions related to the flow of how calls are made from the frontend to the backed. HTTP responses, express technical questions, Node.js technical simple questions, code reading also to detect an error in the way a function is writed.
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Node.js Backend Developer

Interviewed at Juro

4.5★
Jan 2, 2024

Technical questions related to the flow of how calls are made from the frontend to the backed. HTTP responses, express technical questions, Node.js technical simple questions, code reading also to detect an error in the way a function is writed.

There are n gas stations along a circular route between cities of Delhi-Mumbai-Banglore-Kolkata-Delhi in India. Read the following informations. 1. At each station (say {i}th), you can fill your car's tank by gas[i] litres. 2. The gas required to travel from {i}th gas station to {i+1}th gas station is cost[i] litres. Given two integer arrays gas and cost, Find the gas station number from which you can start your journey to complete the round trip by reaching the same gas station. If not possible, return -1. station [1, 2, 3, 4, 5, 6, 7, 8] gas -> [3, 2, 5, 4, 1, 6, 7, 8] cost -> [3, 4, 2, 6, 7, 1, 5, 8] */ // gas = [3, 2, 5, 4, 1, 6, 7, 8] // cost = [3, 4, 2, 6, 7, 1, 5, 8] // start
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Backend Engineer

Interviewed at Locad

3.4★
Feb 18, 2022

There are n gas stations along a circular route between cities of Delhi-Mumbai-Banglore-Kolkata-Delhi in India. Read the following informations. 1. At each station (say {i}th), you can fill your car's tank by gas[i] litres. 2. The gas required to travel from {i}th gas station to {i+1}th gas station is cost[i] litres. Given two integer arrays gas and cost, Find the gas station number from which you can start your journey to complete the round trip by reaching the same gas station. If not possible, return -1. station [1, 2, 3, 4, 5, 6, 7, 8] gas -> [3, 2, 5, 4, 1, 6, 7, 8] cost -> [3, 4, 2, 6, 7, 1, 5, 8] */ // gas = [3, 2, 5, 4, 1, 6, 7, 8] // cost = [3, 4, 2, 6, 7, 1, 5, 8] // start

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