Yaper interview experience Real time questions & tips from candidates to crack your interview
Backend Developer
Yaper
2 rounds | 4 Coding
problems
Rejected
Interview preparation journey
Preparation
Duration: 2 months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming,System Design
Tip 1 : Practice at least 250 Questions
Tip 2 : Do at least 2 projects
Application process
Where: Campus
Eligibility: No criteria
Tip 1 : Have some projects on resume.
Tip 2 : Do not put false things on resume.
Interview rounds
01
Round
Easy
Video Call
Duration45 minutes
Interview date25 Nov 2022
Coding problem2
1. Split Array Into Increasing Subsequences
Easy
15m average time
85% success
0/40
Asked in companies
You are given an integer array/list ‘ARR’ of size 'N' that is sorted in ascending order. Your task is to return '1' if and only if you can split it into one or more increasing subsequences such that each subsequence consists of consecutive integers and has a length of at least 3. Else, return '0'.
Note: An increasing sequence is a sequence where the difference between ith and i + 1th number is 1 exactly. For example : 1, 2, 3, 4 or 3, 4, 5 or -1, 0, 1 are all increasing subsequences.
For example:
Given ‘N’ = 4 and ‘ARR’[] = 1, 2, 3, 4.
The answer will be ‘1’ because an increasing subsequence of [1, 2, 3, 4] having length greater than 3 can be made.
Problem approach
You are given an integer array/list ‘ARR’ of size 'N' that is sorted in ascending order. Your task is to return '1' if and only if you can split it into one or more increasing subsequences such that each subsequence consists of consecutive integers and has a length of at least 3. Else, return '0'.
Note: An increasing sequence is a sequence where the difference between ith and i + 1th number is 1 exactly. For example : 1, 2, 3, 4 or 3, 4, 5 or -1, 0, 1 are all increasing subsequences.
For example:
Given ‘N’ = 4 and ‘ARR’[] = 1, 2, 3, 4.
The answer will be ‘1’ because an increasing subsequence of [1, 2, 3, 4] having length greater than 3 can be made.
2. System Design Question
Design whatsapp?
02
Round
Hard
Video Call
Duration45 minutes
Interview date25 Nov 2022
Coding problem2
1. System Design Questions
What is Sharding?
What is CAP theorem?
2. DBMS Questions
How is NoSQL database different from SQL databases?
How is Horizontal scaling different from Vertical scaling?
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Skill covered: Programming
What is recursion?
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