Exam Date: Jan 18th, 2026

Infosys Specialist Programmer

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Master the 3 Coding Questions (Easy, Medium, Hard) in just 6 Days.

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Urgent: Jan 18th Exam Alert! Only 6 days left. Follow the crash course below strictly.

6-Day Intensive Crash Course (Jan 18th Exam)

Topics: Sliding Window, Two Pointers, Prefix Sum.
Problems: Max Subarray Sum, Rain Water Trapping, 3Sum.

Topics: Palindromes, Anagrams, Substring Search.
Problems: Longest Palindromic Substring, Group Anagrams.

Topics: Activity Selection, Subset Generation.
Problems: Jump Game, Permutations, Combination Sum.

Topics: BFS, DFS, Level Order, Connected Components.
Problems: Number of Islands, ZigZag Traversal, LCA.

Topics: 1D DP, Knapsack, Matrix DP.
Problems: Coin Change, Longest Common Subsequence, Edit Distance.

Action: Take a 3-hour full mock test.
Review: Check Time Limit Exceeded (TLE) & Boundary Cases.

Common Errors to Avoid

1. Time Limit Exceeded (TLE)

Avoid O(N²) solutions for N > 10⁴. Use HashMaps or Two Pointers for O(N).

2. Runtime Error (NZEC/SIGSEGV)

Check for division by zero, array index out of bounds, or null pointers.

3. Output Formatting

Follow exact output format. Remove debug prints before submission.

Actual Interview Questions (2024-25)

Coding Round (HackWithInfy Pattern)

Easy

Maximum Subarray Sum with Adjacent Restriction

Find maximum sum of subarray where no two elements are adjacent. Expected time complexity: O(n).

Arrays Dynamic Programming

Medium

Binary Tree Zigzag Level Order Traversal

Given a binary tree, return the zigzag level order traversal of its nodes' values (i.e., from left to right, then right to left for the next level).

Trees BFS Level Order

Hard

Minimum Window Substring

Find the minimum window in string S which will contain all the characters in string T. If there is no such window, return the empty string.

Strings Sliding Window Two Pointers

Technical & HR Interview Questions

Technical Round

Explain HashMap internal working in Java - collision handling, load factor

Difference between ArrayList vs LinkedList - when to use which?

Design a thread-safe Singleton class in Java

SQL query to find nth highest salary without LIMIT

Explain ACID properties with real database examples

HR Round (Behavioral)

1. Tell me about yourself Focus on your projects, skills, and why you fit this role. Keep it under 2 minutes.

2. Why Infosys? Mention their training program (Mysore), global presence, and values.

3. Are you willing to relocate? Answer must always be YES.

4. What are your strengths & weaknesses? Strength: Adaptability. Weakness: Public speaking (but mention how you are improving it).

5. Where do you see yourself in 5 years? "Growing as a technical expert within Infosys and leading a team."

Smart Google Search Tips

Copy-paste these exact phrases to find the best resources:

For Solutions

"Infosys SP 2024 coding questions GeeksforGeeks" "HackWithInfy solution Java GitHub" "LeetCode Infosys interview pattern"

For Concepts

"HashMap internal working Java interviewbit" "System design low level design examples" "Dynamic programming patterns striver"

Practice Platforms

Quick Success Tips

Solve Daily

Minimum 3 problems every day

Time Management

30 minutes per problem maximum

Clean Code

Write commented, modular code

Explain Aloud

Practice explaining your approach

Revise Core CS

30 minutes daily on DBMS/OS/OOPs

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