Fullstack Developer Interview Questions

2,857 fullstack developer interview questions shared by candidates

2nd round question 1. Compare the following examples, build logic and solve in any programming language(use offline or online IDE). e.g. 1) input : ABDEF output : GFECB e.g. 2) input : xtD output : Euy 2. Generate the square pattern (based on numbers) with sides equal to the given number input: x Use the following examples for reference. Ex:1 - Input number: 4 1 2 3 4 2 3 3 2 4 3 2 1 Ex:1 - Input number: 5 1 2 3 4 5 2 4 3 3 4 2 5 4 3 2 1 Ex:4 - Input number: 6 1 2 3 4 5 6 2 5 3 4 4 3 5 2 6 5 4 3 2 1 Ex:4 - Input number: 7 1 2 3 4 5 6 7 2 6 3 5 4 4 5 3 6 2 7 6 5 4 3 2 1 Ex:5 - Input number: 12 1 2 3 4 5 6 7 8 9 10 11 12 2 11 3 10 4 9 5 8 6 7 7 6 8 5 9 4 10 3 11 2 12 11 10 9 8 7 6 5 4 3 2
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Fullstack Developer

Interviewed at Tandemloop Technologies

4.1
Dec 30, 2025

2nd round question 1. Compare the following examples, build logic and solve in any programming language(use offline or online IDE). e.g. 1) input : ABDEF output : GFECB e.g. 2) input : xtD output : Euy 2. Generate the square pattern (based on numbers) with sides equal to the given number input: x Use the following examples for reference. Ex:1 - Input number: 4 1 2 3 4 2 3 3 2 4 3 2 1 Ex:1 - Input number: 5 1 2 3 4 5 2 4 3 3 4 2 5 4 3 2 1 Ex:4 - Input number: 6 1 2 3 4 5 6 2 5 3 4 4 3 5 2 6 5 4 3 2 1 Ex:4 - Input number: 7 1 2 3 4 5 6 7 2 6 3 5 4 4 5 3 6 2 7 6 5 4 3 2 1 Ex:5 - Input number: 12 1 2 3 4 5 6 7 8 9 10 11 12 2 11 3 10 4 9 5 8 6 7 7 6 8 5 9 4 10 3 11 2 12 11 10 9 8 7 6 5 4 3 2

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