'Coding has over 700 languages', '67% of programming jobs arenâ€™t in the technology industry', 'Coding is behind almost everything that is powered by electricity'
Paytm (One97 Communications Limited) interview experience Real time questions & tips from candidates to crack your interview
SDE - Intern
Paytm (One97 Communications Limited)
3 rounds | 7 Coding problems
Interview preparation journey
Preparation
Duration: 6 months
Topics: Data Structures, OOPS, Algorithms, C++, Development
Tip

Tip 1 : Do at least 1 projects at any technology
Tip 2 : Learn DSA at least these topics Array, LL, Tree, DP

Application process
Where: Campus
Eligibility: No criteria
Resume tip

Tip 1 : At least mention the projects or internships on your resume.
Tip 2 : Avoid unnecessary details like Hobbies, declaration, date.

Interview rounds
01
Round
Medium
Video Call
Duration45 minutes
Interview date10 Dec 2020
Coding problem2

The nature of the interviewer was very kind. The test was proctored, our webcam and mic were on, and shared my screen.

1. Diagonal Traversal of a binary tree.
Easy
10m average time
90% success
0/40

#### Example:

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2. Diameter Of Binary Tree
Easy
10m average time
90% success
0/40

#### Return the length of the diameter of the tree.

##### Note :
``The diameter of a binary tree is the length of the longest ...``
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02
Round
Medium
Video Call
Duration45 Minutes
Interview date10 Dec 2020
Coding problem2

The nature of the interviewer was very kind, helped me when I stuck. The test was proctored, our webcam and mic were on, and shared my screen.

1. Next Greater Element
Easy
10m average time
90% success
0/40

#### You are given an array 'a' of size 'n'.

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2. Subset Sum Equal To K
Moderate
30m average time
65% success
0/80

#### You are given an array/list â€˜ARRâ€™ of â€˜Nâ€™ positive integers and an integer â€˜Kâ€™. Your task is to check if there exists a subset in â€˜ARRâ€™ with a sum equal to â€˜Kâ€™.

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03
Round
Medium
Video Call
Duration45 Minutes
Interview date10 Dec 2020
Coding problem3

The nature of the interviewer was very kind, helped me when I stuck. The test was proctored, our webcam and mic were on, and shared my screen.

Hard
0/120

#### You are given an array â€˜prices...

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2. DBMS Questions

SQL command
ACID properties
Difference between unique primary and foreign key.

3. OS Questions

What is segementation.
Difference between internal and external fragmentation.

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