'Coding has over 700 languages', '67% of programming jobs aren’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 - 1
Paytm (One97 Communications Limited)
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4 rounds | 6 Coding problems
Interview preparation journey
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Preparation
Duration: 2
Topics: Data Structures, Algorithms, DP, OOPS, Operating Systems, Computer Networks, DBMS
Tip
Tip

Tip 1 : DSA is the key. Starting from scratch, one can become proficients in a couple of months.
Tip 2 : Solve questions just a bit outside your comfort zone. Solve too easy to too hard questions is not of any use.
Tip 3 : Be consistent, make a habit of following good coding practices.
Tip 4 : Get to know the ins and out of your projects. You must be very confident while explaining those.
Tip 5 : Don't just directly to system-design, brush up on OOPS principles, networks, OS, DBMS before that.

Application process
Where: Campus
Eligibility: None except no active backlogs
Resume Tip
Resume tip

Tip 1: Keep it crisp and to the point. Make bullet points.
Tip 2: Bold the things you want to be paid attention to. Use numbers rather than vague sentences.
Tip 3: Only put the things you are confident about.
Tip 4: Don't put things irrelevant to the job, it only dilutes the main content.

Interview rounds
01
Round
Medium
Online Coding Test
Duration70 minutes
Interview date6 Aug 2020
Coding problem3

Timing: 6:00 pm
3 coding questions of medium to be solved in 70 minutes.

1. Maximum Subarray Sum
Moderate
25m average time
75% success
0/80
Asked in companies
Paytm (One97 Communications Limited)HCL TechnologiesDirecti

Given an array of numbers, find the maximum sum of any contiguous subarray of the array.


For example, given the array [34, -50, 42, 14, -5, 86], the maximum ...

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2. Closest Leaf To Given Node In Binary Tree
Moderate
15m average time
85% success
0/80
Asked in companies
Paytm (One97 Communications Limited)Paytm (One97 Communications Limited)Cabin4j

Ninja is stuck in a maze which is in a form of a binary tree. He needs your help in order to get out.

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3. Rotting Oranges
Moderate
20m average time
78% success
0/80
Asked in companies
Samsung R&D InstitutePaytm (One97 Communications Limited)Samsung R&D Institute

You have been given a grid containing some oranges. Each cell of this grid has one of the three integers values:

  • Value 0 - representing an empty cell.
  • Value 1 - r...
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    02
    Round
    Medium
    Video Call
    Duration45 minutes
    Interview date8 Aug 2020
    Coding problem1

    Timing: 2:00 pm
    Online round over google meet, code at google docs.
    The interviewer was friendly, encouraging, and humble.

    1. Find Smallest Integer
    Moderate
    10m average time
    90% success
    0/80
    Asked in companies
    DelhiveryMakeMyTripUber

    You are given an array 'ARR' consisting of 'N' positive numbers and sorted in non-decreasing order, and your task is to find the sm...

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    03
    Round
    Medium
    Video Call
    Duration45 minutes
    Interview date8 Aug 2020
    Coding problem1

    Timing: 2:00 pm
    Online round over google meet, code at google docs.
    The interviewer was not speaking much. It was a bit strange.

    1. Bottom Right View of Binary Tree
    Easy
    10m average time
    90% success
    0/40
    Asked in companies
    DunzoPaytm (One97 Communications Limited)Paytm (One97 Communications Limited)

    Given a binary tree. Your task is to print the bottom right view of the binary tree.

    Bottom right view, on viewing the given binary tree at the angle of 45 degrees from the bottom right si...

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    04
    Round
    Easy
    HR Round
    Duration30
    Interview date8 Aug 2020
    Coding problem1

    Timing: 7:00 pm
    The interviewer was friendly and in a bit of a hurry.

    1. Basic HR Questions
    Problem approach

    Tip 1: Be confident while you are speaking.
    Tip 2: Explain the reason for your choosing something over the other in the project.
    Tip 3: Describe how would you have taken the project further if you had more time/resources.

    Tip 4: Show enthusiasm and desire to learn.
    Tip 5: Exhibit leadership skills when describing your experiences.
    Tip 6: Be humble and listen to the feedback ca...

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