Infosys Round 2 Preparation 2026 – Coding, Interview & Most Repeated Patterns

Preparing for the Infosys Round 2? If you have cleared the first stage and are now preparing for the next coding or interview round, this guide will help you focus on the most important topics instead of trying to cover the entire DSA syllabus.

We have prepared a detailed Infosys Last-Moment Preparation Guide 2026 covering the major coding patterns, Wingspan interview preparation, SQL, core CS subjects, resume-based questions, and system design fundamentals.

The guide is designed for candidates preparing for Infosys on-campus and off-campus opportunities, especially those who want a focused preparation strategy when only a few days are left.

Infosys Round 2 Preparation – What Should You Prepare?

The biggest mistake during last-moment preparation is trying to complete hundreds of DSA questions. Instead, focus on patterns and problem-solving techniques.

According to the preparation guide, the recommended coding priority is:

DP (Dynamic Programming)
Greedy
Sliding Window
Two Pointers
Bit Manipulation
Trees
Graphs

The guide specifically recommends understanding why a technique works rather than simply memorizing solutions. This is particularly important because the same problem-solving ability can carry over into the interview stage.

Most Important Coding Patterns for Infosys Round 2

1. Dynamic Programming – Highest Priority

Dynamic Programming is one of the most important areas in the preparation guide.

Candidates should practice patterns such as:

0/1 Knapsack and Subset Sum
Partition Equal Subset Sum
Target Sum
Coin Change
Longest Common Subsequence
Longest Palindromic Subsequence
Longest Increasing Subsequence
Edit Distance
House Robber
Decode Ways
Word Break
Jump Game
Frog Jump

2. Greedy

Greedy is another high-priority pattern. Important problems include:

Jump Game
Jump Game II
Gas Station
Partition Labels
Best Time to Buy and Sell Stock II

3. Sliding Window

For Sliding Window, focus on problems such as:

Longest Substring Without Repeating Characters
Minimum Size Subarray Sum
Longest Repeating Character Replacement
Permutation in String
Minimum Window Substring

4. Two Pointers

Important Two Pointer problems include:

Two Sum II
3Sum
Container With Most Water
Sort Colors
Remove Duplicates from Sorted Array

5. Bit Manipulation

Revise the fundamentals of:

XOR
n & (n-1)
Set bits
Bitmasking
Odd/even checks

You should also practice problems such as Single Number, Missing Number, Number of 1 Bits, Counting Bits, and Power of Two.

Trees & Graphs for Infosys Coding Preparation

After covering the higher-priority patterns, revise the fundamentals of Trees and Graphs.

Important areas include:

Inorder, Preorder and Postorder Traversals
Level Order Traversal
Tree Height
Diameter
Lowest Common Ancestor
BST Operations
BFS and DFS
Connected Components
Cycle Detection
Shortest Path Basics

The guide recommends understanding the underlying technique instead of only memorizing code.

Infosys Round 2 Coding Strategy

Your first goal should be to secure at least one completely working solution. A clean, fully solved problem is more valuable than having multiple partially completed solutions.

For on-campus assessments, the guide recommends scanning all questions first and classifying them into Easy, Medium and Hard. Solve the easier question first and avoid spending too much time fighting a single problem.

For off-campus assessments, competition and cutoffs may be higher. The recommended target is to complete one question and push the second question as far as possible, aiming for two complete solutions if time permits.

Infosys Wingspan Interview Preparation

Clearing the coding assessment does not necessarily mean that the next stage will only contain HR questions.

For technical roles, prepare for:

Coding
Computer Science fundamentals
SQL
Projects and resume-based questions
System Design, especially for SP-level roles

The preparation guide describes the Wingspan coding section as requiring LeetCode Medium-level thinking and recommends the same pattern order: DP → Greedy → Sliding Window → Two Pointers → Bit Manipulation → Trees → Graphs.

5-Part Framework for Explaining Coding Solutions

During an interview, solving the problem is only part of the process. You should also be able to clearly explain your approach.

Use this framework:

Brute Force: Explain the straightforward approach and its complexity.
Observation: Explain the important insight behind the problem.
Optimization: Explain how you can improve the solution.
Complexity: Clearly state time and space complexity.
Edge Cases: Discuss empty input, single elements, duplicates, negatives, maximum constraints and sorted/reversed input.

This framework is included in the preparation guide because communication and reasoning are important during the interview, not just the final code.

SQL Questions to Prepare for Infosys Interview

Do not prepare only DSA. The guide recommends revising the following SQL concepts:

SELECT
WHERE
GROUP BY and HAVING
ORDER BY
Aggregate Functions
INNER JOIN
LEFT JOIN
Multiple JOINs
Subqueries and CTEs
Window Functions
ROW_NUMBER()
RANK()
DENSE_RANK()

Also practice classic SQL problems such as:

Find the second-highest salary
Find the highest salary in each department
Find duplicate records
Find employees earning more than their department average
Find the nth-highest salary

These topics are specifically listed in the preparation guide.

Core CS Subjects for Infosys Interview

Candidates should also revise the core CS fundamentals.

DBMS

Focus on:

Normalization
ACID properties
Transactions
Keys
Indexing
Joins
Primary Key vs Foreign Key
DELETE vs TRUNCATE vs DROP

OOP

Revise:

Encapsulation
Inheritance
Polymorphism
Abstraction
Overloading vs Overriding
Interface vs Abstract Class
SOLID basics

Operating Systems

Important areas include:

Process vs Thread
Deadlock
Scheduling
Paging
Virtual Memory
Synchronization
Context Switching

Computer Networks

Revise:

TCP vs UDP
HTTP vs HTTPS
OSI Model
IP
DNS
REST API
HTTP Status Codes

The guide’s Core CS section ranks DBMS as the highest-priority subject, followed by OOP and OS, with CN also included for revision.

System Design for Infosys SP Candidates

If you are targeting an SP-level role, System Design should not be ignored.

Start with the basic architecture:

Client → API → Server → Database

Then understand concepts such as:

Load Balancer
Caching
API Gateway
Message Queue
Database Choices
Authentication and Authorization
Horizontal vs Vertical Scaling
SQL vs NoSQL
Rate Limiting

The guide suggests being able to sketch and explain simple systems such as a URL Shortener, Food Delivery App, Online Book Store, Ride Booking System or Chat Application.

Prepare Your Resume & Projects

Anything mentioned on your resume can become an interview question.

For example, if you mention Java, AWS or REST APIs, be prepared to answer questions related to those technologies.

For every project, prepare answers to these seven questions:

What problem does your project solve?
Why did you build it?
What technologies did you use?
What was your contribution?
What was the biggest challenge?
How did you solve it?
How would you improve or scale it?

These seven project questions are directly included in the preparation guide.

Infosys Round 2 Last-Minute Preparation Order

If you have very little time remaining, follow this order.

Coding Assessment Roadmap:

DP
Greedy
Sliding Window
Two Pointers
Bit Manipulation
Trees
Graphs

Wingspan Interview Roadmap:

2 Coding Questions
SQL
DBMS
OOP
OS
Resume + Projects
System Design, especially for SP
HR / Behavioral

This order is summarized in the final preparation roadmap of the guide.

📥 Download Infosys Last-Moment Preparation Guide 2026

Infosys Round 2 Preparation 2026 – Coding, Interview & Most Repeated Patterns

If you are preparing for the Infosys Round 2, coding round, Wingspan interview, or SP-level interview, you can download the complete preparation guide from the link below.

📥 Drive Link:

Download Infosys Last-Moment Preparation Guide 2026

Important Note About Infosys Cutoffs

Preparation benchmarks should not be treated as guaranteed cutoffs. The guide specifically notes that figures such as the number of questions needed to clear a round are based on observed benchmarks from past drives and can vary depending on the drive, test difficulty and candidate pool.

Therefore, focus on solving problems correctly and understanding the underlying patterns rather than preparing only around a particular expected cutoff.

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Frequently Asked Questions (FAQs)

What should I prepare for Infosys Round 2?

Focus on the major coding patterns first: DP, Greedy, Sliding Window, Two Pointers and Bit Manipulation, followed by Trees and Graphs. For the interview stage, also revise SQL, DBMS, OOP, OS, your resume and projects.

Which coding patterns are most important for Infosys?

According to the preparation guide, DP and Greedy have the highest priority, followed by Sliding Window, Two Pointers, Bit Manipulation, Trees and Graphs.

Should I prepare SQL for the Infosys interview?

Yes. The guide recommends revising SQL fundamentals including joins, subqueries, CTEs, aggregate functions and window functions, along with common salary and duplicate-record queries.

Should I prepare DBMS, OOP and OS?

Yes. These are specifically included in the Core CS preparation section of the guide, with DBMS receiving the highest priority.

Is System Design required for Infosys?

The guide recommends System Design preparation particularly for candidates targeting SP-level roles. The focus should be on fundamentals and explaining design decisions clearly rather than attempting advanced System Design topics at the last moment.

How should I prepare if I only have a few days?

Do not randomly solve 100 DSA questions. First master the major patterns, then revise Trees and Graphs. For the interview, move on to SQL, DBMS, OOP, OS, resume/projects and System Design if you are targeting SP.

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