Paytm Interview Preparation
Question Details
Here, you can find all the technical resources (articles, coding problems, subjective problems, video tutorials and interview experiences) that are helpful in preparing fo...
Full Details
Here, you can find all the technical resources (articles, coding problems, subjective problems, video tutorials and interview experiences) that are helpful in preparing for "Paytm Interview" !! Company's Wikipedia URL: Paytm Company's Website URL: www.paytm.com Popular Articles Count frequencies of all elements in array in O(1) extra space and O(n) time Convert array into Zig-Zag fashion Sort an array of 0s, 1s and 2s Segregate 0s and 1s in an array Find the row with maximum number of 1s Recursively remove all adjacent duplicates Reverse words in a given string Find Excel column name from a given column number Write an Efficient Function to Convert a Binary Tree into its Mirror Tree How to determine if a binary tree is height-balanced? C program to multiply two matrices Merge Sort for Linked Lists Bottom View of a Binary Tree How to print maximum number of 'A' using given four keys Merge Sort Show All Articles Popular Coding Problems Longest Increasing Subsequence Reverse words in a given string Sort an array of 0s, 1s and 2s Search in a Rotated Array Minimum Platforms Reverse a linked list Detect Loop in linked list Left View of Binary Tree Reverse a Linked List in groups of given size. Mirror Tree Show All Coding Problems Recent Interview Experiences Paytm Topics for Interview Preparation Paytm Interview Experience For A Software Engineer Print maximum number of ‘A’ using given four keys Paytm Interview Experience Paytm Interview Experience for SDE-1 (On-Campus) Paytm Interview Experience Paytm Interview Experience For Java Backend One97 Recruitment Process Paytm Interview Experience for Data Engineer Paytm Interview Experience for DevOps Engineer | On-Campus 2022 Show All Interview Experiences
About This Question
This is a reported interview question from a paytm interview for a data eng role during the onsite round reported in 2025.
It covers the following topics: Linked List, Trees, Strings, Dynamic Programming, Binary Tree, Sorting, Arrays .
More Paytm Interview Questions
About Paytm Interview Reports
This question was reported by a candidate who interviewed at Paytm. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.
Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at Paytm are the higher-signal extractions to take from this report.
For broader preparation context, the Paytm interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.
How To Practice This Type of Question
Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.
Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in Paytm reports consistently are the ones worth investing in; one-off niche problems are not.
During Your Paytm Round
Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.
The single most predictive failure mode in Paytm reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.