Unthinkable Solutions interview experience Real time questions & tips from candidates to crack your interview

Java Developer

Unthinkable Solutions
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3 rounds | 4 Coding problems

Interview preparation journey

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Preparation
Duration: 1 month
Topics: Array, Linked List, Trees, Stack, Queue, Basic DSA, Logical Questions
Tip
Tip

Tip 1 : Stay focused, listen to the question thoroughly and then try to answer
Tip 2 : Stay confident, I believe very few could answer all the questions correctly

Application process
Where: Company Website
Eligibility: 6 CGPA
Resume Tip
Resume tip

Tip 1 : Make sure to write only the correct skillset
Tip 2 : Try to write down the work that you had done in previous years.

Interview rounds

01
Round
Easy
Online Coding Interview
Duration60 minutes
Interview date26 Nov 2021
Coding problem2

Basic questions.

1. Star Pattern

Easy
0/40
Asked in companies
IBMAmazonUnthinkable Solutions

Pattern for N = 4


Hint
As taught in the video, you just have to modify the code so that instead of printing numbers, it should output stars ('*').

The dots represent spaces.



Problem approach

Supereasy pattern only one csn use a loop and solve that.

Try solving now

2. Magical Pattern

Easy
20m average time
80% success
0/40
Asked in companies
Goldman SachsReliance Jio Infocomm LtdCRED

You have been given an integer 'N'. Your task is to print the Magical Pattern(see examples) for the given 'N'.

Example :

For 'N' : 4
Pattern :
4 3 2 1 2 3 4                                                                   
3 3 2 1 2 3 3                                                                   
2 2 2 1 2 2 2                                                                   
1 1 1 1 1 1 1                                                                   
2 2 2 1 2 2 2                                                                   
3 3 2 1 2 3 3                                                                   
4 3 2 1 2 3 4
Problem approach

Although might looked easy but at the real time was a hard nut to crack for me. Took multiple variable to print.

Try solving now
02
Round
Medium
Online Coding Interview
Duration60 minutes
Interview date9 Dec 2021
Coding problem1

1. Minimum Number Of Swaps For Bracket Balancing

Moderate
15m average time
85% success
0/80
Asked in companies
OlaUnthinkable SolutionsNagarro Software

Ninja and his friend are playing a game in which his friend picks N opening brackets ‘(‘ and N closing brackets ‘)’. He then mixes all of them randomly and generates a string 'BRACKETS'. He asks Ninja to balance ‘BRACKETS’.

Example:
Here are some examples of balanced BRACKETS "(())", "()()", "(())()".

Ninja can perform the following operation to balance BRACKETS. In one operation, Ninja can pick two adjacent brackets and swap them. His friend challenges him to accomplish the task in minimum possible operations. Ninja needs your help to do this.

Can you help Ninja to make the string ‘BRACKETS’ balanced in minimum possible swaps?

Problem approach

Use stack to solve this type of questions

Try solving now
03
Round
Easy
Video Call
Duration60 minutes
Interview date24 Dec 2021
Coding problem1

Asked few elementary data structure topics

1. Missing Numbers

Easy
28m average time
85% success
0/40
Asked in companies
AdobeOlaAmazon

You are given an array 'ARR' of distinct positive integers. You need to find all numbers that are in the range of the elements of the array, but not in the array. The missing elements should be printed in sorted order.

Example:
If the given array is [4, 2, 9] then you should print "3 5 6 7 8". As all these elements lie in the range but not present in the array.
Problem approach

Use maths and It's damn easy

Try solving now

Here's your problem of the day

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

Skill covered: Programming

How do you remove whitespace from the start of a string?

Choose another skill to practice
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