Open In App

Paytm Interview Experience | Set 11 (For 2 Years Experienced)

Last Updated : 29 May, 2019
Like Article

Round 1:

  • Brief intro

  • Discussion about Projects and work ex.

  • Why are you using aerospike?

  • Given a matrix sorted only row-wise, search a number in it. (Complexity O(log(m+n))).

Round 2:

  • Brief intro

  • Discussion about project

  • Why are you using aerospike?

  • Design a hashmap.

  • Relationship between equals() and hashcode().

  • Find a loop in linked list

  • Given a string, print it in reverse order word by word. E.g. “Name is XYZ” -> “XYZ is Name”. First without any java function, then with built in java functions.

  • Given a file, read it line by line, and print occurrences of each word in a line.

  • Difference between StringBuilder and StringBuffer.

  • Design a singleton class. Then make it thread safe. Then improve its performance by double checked locking.

  • What is volatile.

Round 3:

Round 4:

  • Brief intro

  • Discussion about project

  • What is aerospike XDR?

  • How will you make a list unmodifiable? Eg List list = {1,2,3,4,5}. Now list cannot add or remove any element.

  • Write code for an enum. How will you get ordinality for an enum? How can your enum A extends some class B?

  • Difference between List<?> and List<Object>

  • List<?> list1 = new ArrayList<?>();

  • List<Object> list2 = new ArrayList<Object>();

  • List<String> list3 = new ArrayList<String>();

List1 = list3;

List1 = (List<String>)list2;

What will be its output?



Previous Article
Next Article

Similar Reads

PayTm Interview Experience | Set 23 (For 2 Years Experienced)
Round 1: First round was taken on mettl, online judge. There was two questions and that required to be done in 1hr 1. A paragraph which contained some dates in format DD-MM-YYYY, find number of distinct years in the paragraph. For e.g Some random words with date 12-01-1990 and some more words with date 12-12-2017 and again some random words with sa
2 min read
Paytm interview experience | Set 24 (1.5 years experienced)
I was interviewed at Paytm office, Noida for Backend Developer role in March 2018. Round 1: Discussion on current work and projects mentioned in the resume Given an array of n-2 elements. The range of elements is n and 2 elements are missing. Find them and write a code for the same Round 2: What are process and thread. Difference between the two. P
1 min read
Paytm Interview Experience | Set 12 (For 1.5 Years Experienced)
I want to share my interview experience with Paytm with all of you. Round-1 [1.5 hr] Brief introduction Discussion about project why are you using Fluentd(EFK) in place of Logstash(ELK) Question on Elastic Search [Based on my project] Given a binary tree, write a function to print its top and bottom view. Round-2 [1 hr] Brief Introduction Given an
1 min read
Paytm Interview Experience | Set 18 (For 2 Years Experienced)
Hi all, below are the questions asked in paytm interview for 2yr experienced guy in java technology. I could remember these much only, although there were more questions. Round 1: Explained previous projects. Interfaces vs abstract class interface i1 : void fun() interface i2 : int fun() interface i3 : Object fun(int x) class implementing all these
3 min read
Paytm Interview Experience For Experienced (2.5 years)
Round 1: Online Coding Round. There were two programming question which were supposed to be solved in 1 hour. Given two input String a, String b, return a string array which consists of word recommendation from string a that matches with string b in it. For example -&gt; String a = "this is the best way to get the best knowledge out there." String
3 min read
Paytm Interview Experience (For 2 -3 years Experienced)
Recently I got a call from the Paytm Money HR team through one Job portal where I have put my profile. Feb 2021 There were total 4 rounds (online test+2 technical on Google Meet +HR) 1. Online Test: There were 2 coding questions asked and 1.5 hrs. Time was given to solve both the problems on the Mettl test platform. I had to implement alt+tab funct
4 min read
Paytm Interview Experience for Senior Software Engineer | 4 Years Experienced
Technical Round(1 hr): Asked about my current company projects and techstack usedwhat is thread? Synchronized keyword? Diff. ways of creating threads in java, which one is better? difference b/w multithreading &amp; multiprogrammingWhat is txn in DBMS? ACID propertiesInternal implementation of map. How put of HashMap works? https://www.javatpoint.c
2 min read
Paytm Interview Experience for iOS Developer | 2 Years Experienced
Paytm - iOS Developer Round 1(Online Coding Round): 1 DSA question + 15 iOS basics questions DSA Question - Find the Longest palindrome in the given string iOS Questions - Queues, access specifiers, memory management, the output of the code, reference count ARC, closures, etc. Round 2(DSA + iOS Intermediate): What is the auto layout, when should we
1 min read
Paytm Interview Experience for Data Engineer ( 2 Years Experienced)
Round 1(Technical) [1hr]: IntroductionDiscussion on Project.Some SQL questions are easy to difficult level. likeRemove duplicates from the table.nth height item in each partition.In one table IPL team's name give and you have to find a combination of matches to be played between them with some conditions. = use self joinRunning aggregation on table
3 min read
Paytm Interview Experince for Software Engineer | 2+ Years Experienced
I applied on Instahyre and shared my resume. HR called me and setup the whole process. HR was very helpful throughout the whole process. Online Round(70 minutes): This round has 4 sections One Coding question: Longest Collatz sequenceJAVA MCQsSQL MCQsData Structure MCQs Technical Round 1(1 hour): Median of Two Sorted Arrays - I was able to give the
3 min read