Coalition Technologies interview experience Real time questions & tips from candidates to crack your interview

SDE - 1

Coalition Technologies
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3 rounds | 5 Coding problems

Interview preparation journey

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Journey
In the lockdown period, I started my journey to where I am today. When the first lockdown prevailed I started to learn DSA, and I think that was the best time to learn DSA because no pressure from college was there for its useless assignments and all. In the lockdown of around 6 months, I learnt the basic algorithms and at the end I started practising on leetcode and codechef like platforms, they helped me a lot during my journey.
Application story
I was practising DSA on a regular day when I saw a small advertisement kind of on leetcode. I opened it and I got to find that Coalition technologies is looking for some fresher graduates to serve as SDE-1. I applied to it and after three rounds, I was selected.
Why selected/rejected for the role?
I think I had the appropriate skills and a good amount of knowledge to prove that I was the right man for the post. I also solved coding questions in the optimal manner.
Preparation
Duration: 8 months
Topics: OS, Data Structures, Pointers, Recursion, OOPS, System Design, Algorithms, Dynamic Programming
Tip
Tip

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.

Application process
Where: Leetcode
Eligibility: 7 CGPA
Resume Tip
Resume tip

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

Interview rounds

01
Round
Easy
Online Coding Interview
Duration60 minutes
Interview date15 Jun 2021
Coding problem2

1. Container With Most Water

Moderate
15m average time
90% success
0/80
Asked in companies
MicrosoftAmazonSAP Labs

Given a sequence of ‘N’ space-separated non-negative integers A[1],A[2],A[3],......A[i]…...A[n]. Where each number of the sequence represents the height of the line drawn at point 'i'. Hence on the cartesian plane, each line is drawn from coordinate ('i',0) to coordinate ('i', 'A[i]'), here ‘i’ ranges from 1 to ‘N’. Find two lines, which, together with the x-axis forms a container, such that the container contains the most area of water.

Note :
1. You can not slant the container i.e. the height of the water is equal to the minimum height of the two lines which define the container.

2. Do not print anything, you just need to return the area of the container with maximum water.
Example

water-diagram

For the above Diagram, the first red marked line is formed between coordinates (2,0) and (2,10), and the second red-marked line is formed between coordinates (5,0) and (5,9). The area of water contained between these two lines is (height* width) = (5-2)* 9 = 27, which is the maximum area contained between any two lines present on the plane. So in this case, we will return 3* 9=27.
Try solving now

2. Puzzle

You have three mislabeled jars. The first jar contains apples, the second contains oranges, and the third contains a mix of apples and oranges. You need to label the jars. You can pick as many fruits as you want from each jar. What is the least number of fruits you have to pick from each jar to label them correctly?

02
Round
Easy
Face to Face
Duration60 minutes
Interview date22 Jun 2021
Coding problem2

1. Evaluate Division

Moderate
15m average time
85% success
0/80
Asked in companies
UberIBMSalesforce

You are given an array of pairs of strings 'EQUATIONS', and an array of real numbers 'VALUES'. Each element of the 'EQUATIONS' array denotes a fraction where the first string denotes the numerator variable and the second string denotes the denominator variable, and the corresponding element in 'VALUES' denotes the value this fraction is equal to.

You are given ‘Q’ queries, and each query consists of two strings representing the numerator and the denominator of a fraction. You have to return the value of the given fraction for each query. Return -1 if the value cannot be determined.

Example :
'EQUATIONS' = { {“a”, ”s”} , {“s”, “r”} }
'VALUES' = { 1.5, 2 }
queries = { {“a”, “r” } }

For the above example (a / s) = 1.5 and (s / r) = 2 therefore (a / r) = 1.5 * 2 = 3.
Try solving now

2. Shuffle Two Strings

Hard
50m average time
50% success
0/120
Asked in companies
LinkedInShareChatCIS - Cyber Infrastructure

You are given three strings “A”, “B” and “C”. Your task is to check whether “C” is formed by an interleaving of A and B. C is said to be interleaving “A” and “B”, if the length of “C” is equal to the sum of the length of A and length of B, all the characters of “A” and “B” are present in “C”, and the order of all these characters remains the same in all three strings.

For Example:
If A = “aab”, B = “abc”, C = “aaabbc”
Here C is an interleaving string of A and B. Because C contains all the characters of A and B and the order of all these characters is also the same in all three strings.

interleaving

If A = “abc”, B = “def”, C = “abcdefg”
Here C is not an interleaving string of A and B as neither A nor B contains the character ‘g’.
Try solving now
03
Round
Easy
HR Round
Duration20 minutes
Interview date30 Jun 2021
Coding problem1

1. Basic HR Questions

Tell me about yourself.
How do you think one can overcome his weaknesses?
How will you react if you are asked to work overtime at the same pay?
How will you handle conflict in your colleagues?
Are you willing to relocate?
What do you know about the work culture here in Coalition?

Here's your problem of the day

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

Skill covered: Programming

What is recursion?

Choose another skill to practice
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