Codezero2pi interview experience Real time questions & tips from candidates to crack your interview

Software Engineer

Codezero2pi
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3 rounds | 6 Coding problems

Interview preparation journey

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Journey
I took admission in tier 2 college for B.Tech in Computer Science. Firstly I planned that I will start learning DSA from the first year but I could not. So, I started DSA from the fourth semester and along with DSA, I also learned development because that is what I wanted to be. By the end of Third year, I was confident in both DSA and development but even then I keep on revising the concepts.
Application story
I got to know about this opening through linkedin post. I applied to the post and looked at the important question for the particular company and started practising for that. After few days, I got a mail that I will be having an assessment test after which there will be a face to face Technical Round and then the final HR round will takes place.
Why selected/rejected for the role?
I was giving correct explanation for my solutions in the coding round. I also built the optimal solution starting from the brute force algorithm which also added to my points.
Preparation
Duration: 5 months
Topics: Data Structures, Algorithms, System Design, Aptitude, OOPS, OS, Networking
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.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

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

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Interview rounds

01
Round
Medium
Online Coding Test
Duration60 minutes
Interview date8 Sep 2022
Coding problem2

1. Word Search - lll

Moderate
20m average time
80% success
0/80
Asked in companies
GoogleAmazonUber

You are given character matrix of dimension N * M. Then you are given 'Q' queries, each query consists of a word 'W', and you have to tell whether it is possible to form word 'W' by choosing some adjacent characters from this matrix.

Note:

1. Two characters are said to be adjacent if they share a side or corner i.e. for a cell inside the matrix have 8 adjacent cells (if they exist).
2. One character in the matrix will not be considered twice for forming a word.
3. All the characters in the matrix and words consist only of uppercase English alphabets only.
Try solving now

2. Check Bipartite Graph

Moderate
50m average time
50% success
0/80
Asked in companies
UberWalmarteBay

Given a graph, check whether the graph is bipartite or not. Your function should return true if the given graph's vertices can be divided into two independent sets, ‘U’ and ‘V’ such that every edge (‘u’, ‘v’) either connects a vertex from ‘U’ to ‘V’ or a vertex from ‘V’ to ‘U’.

You are given a 2D array ‘edges’ which contains 0 and 1, where ‘edges[i][j]’ = 1 denotes a bi-directional edge from ‘i’ to ‘j’.

Note:
If edges[i][j] = 1, that implies there is a bi-directional edge between ‘i’ and ‘j’, that means there exists both edges from ‘i’ to ‘j’ and to ‘j’ to ‘i’.

For example

Given:
‘N’ = 3
‘edges’ = [[0, 1, 1], [0, 0, 1], [0,0,0]]. 

Try solving now
02
Round
Medium
Telephonic
Duration60 minutes
Interview date15 Sep 2022
Coding problem3

1. Candies

Moderate
10m average time
90% success
0/80
Asked in companies
Goldman SachsOYOFlipkart

Prateek is a kindergarten teacher. He wants to give some candies to the children in his class. All the children stand in a line and each of them has a grade according to his or her performance in the class. Prateek wants to give at least one candy to each child. If two children are standing adjacent to each other, then the one with the higher rating must get more candies than the other. Prateek wants to minimize the total number of candies he must buy.

Given an array 'STUDENTS' of size 'N' that contains the grades for each student, your task is to find what is the minimum number of candies Prateek must buy so that he can distribute them among his students according to the criteria given above.

Example :

Given students' ratings : [5, 8, 1, 5, 9, 4]. 
He gives the students candy in the following minimal amounts : [1, 2, 1, 2, 3, 1]. He must buy a minimum of 10 candies.

Note :

1. If two students having the same grade are standing next to each other, they may receive the same number of candies.
2. Every student must get at least a candy.
Try solving now
Easy
10m average time
90% success
0/40
Asked in companies
Disney + HotstarMicrosoftPaytm (One97 Communications Limited)

Given N pairs of parentheses, write a function to generate and print all combinations of well-formed parentheses. That is, you need to generate all possible valid sets of parentheses that can be formed with a given number of pairs.

Try solving now

3. OS Questions

What is a socket?
What is kernel?
What is monolithic kernel?
What is the concept of reentrancy?
What is the use of paging in operating system?
What is the concept of demand paging?

03
Round
Easy
HR Round
Duration20 minutes
Interview date20 Sep 2022
Coding problem1

1. Basic HR Questions

What are your hobbies?
What do you think makes you a better choice than the other candidates?
What are your strengths and weaknesses?
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?

Here's your problem of the day

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

Skill covered: Programming

Which keyword is used for inheritance?

Choose another skill to practice
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