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# SDE - Intern

2 rounds | 4 Coding problems

## Interview preparation journey

Preparation
Duration: 3 months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming
Tip

Tip 1 : Practice from Leetcode, solve Leetcode medium level problems.
Tip 2 : Brush up computer fundamentals from subjects like OS, DBMS and CN.
Tip 3 : Have a good project or good internship experience and have in-depth knowledge regarding what you have done.

Application process
Where: Campus
Eligibility: Above 7 CGPA
Resume tip

Tip 1 : Have some projects on resume.
Tip 2 : Do not put false things on resume.

## Interview rounds

01
Round
Medium
Video Call
Duration45 minutes
Interview date17 Aug 2021
Coding problem2

### 1. Minimum Operations

Easy
20m average time
82% success
0/40

#### You are given an array 'ARR' of 'N' positive integers. You need to find the minimum number of operations needed to make all ele...

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Problem approach

You are given an array 'ARR' of 'N' positive integers. You need to find the minimum number of operations needed to make all elements of the array equal. You can perform addition, multiplication, subtraction or division with any element on an array element.
Addition, Subtraction, Multiplication or Division on any element of the array will be considered as a single operation.
Example:
If...

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### 2. Tower of Hanoi

Easy
15m average time
85% success
0/40

#### You are given three rods (numbered 1 to 3), and â€˜Nâ€™ disks initially placed on the first ro...

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Problem approach

You are given three rods (numbered 1 to 3), and â€˜Nâ€™ disks initially placed on the first rod, one on top of each other in increasing order of size ( the largest disk is at the bottom). You are supposed to move the â€˜Nâ€™ disks to another rod(either rod 2 or rod 3) using the following rules and in less than 2 ^ (N) moves.
1. You can only move one disk in one move.
2. You can not place a ...

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02
Round
Easy
Video Call
Duration45 minutes
Interview date17 Aug 2021
Coding problem2

### 1. OS Questions

Problem approach

In computer architecture, multithreading is the ability of a central processing unit to provide multiple threads of execution concurrently, supported by the operating system. This approach differs from multiprocessing.

### 2. Design Question

How do you design a URL Shortening service like goo.gl or bit.ly?

Problem approach

Make sure to provide database schema and rationale behind some design decisions like how long you keep the data, how to get stats and analytics etc

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

What is the output of print 0.1 + 0.2 == 0.3?

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