Witeso

Rank	Topic	Frequency	Percentage
1	Array	96	53.3%
2	String	39	21.7%
3	Math	33	18.3%
4	Two Pointers	32	17.8%
5	Dynamic Programming	32	17.8%
6	Hash Table	29	16.1%
7	Sorting	24	13.3%
8	Binary Search	20	11.1%
9	Greedy	15	8.3%
10	Backtracking	10	5.6%
11	Stack	10	5.6%
12	Breadth-First Search	10	5.6%
13	Linked List	9	5.0%
14	Bit Manipulation	9	5.0%
15	Recursion	9	5.0%
16	Sliding Window	9	5.0%
17	Prefix Sum	9	5.0%
18	Graph Theory	8	4.4%
19	Heap (Priority Queue)	8	4.4%
20	Matrix	8	4.4%
21	Tree	7	3.9%
22	Depth-First Search	7	3.9%
23	Database	7	3.9%
24	Simulation	6	3.3%
25	Binary Tree	6	3.3%
26	Divide and Conquer	5	2.8%
27	Union-Find	5	2.8%
28	Design	3	1.7%
29	Memoization	3	1.7%
30	Monotonic Stack	3	1.7%
31	Counting	3	1.7%
32	Number Theory	3	1.7%
33	Shortest Path	3	1.7%
34	Trie	2	1.1%
35	Binary Search Tree	2	1.1%
36	Queue	2	1.1%
37	Quickselect	2	1.1%
38	Topological Sort	1	0.6%
39	Binary Indexed Tree	1	0.6%
40	Segment Tree	1	0.6%
41	Brainteaser	1	0.6%
42	Geometry	1	0.6%
43	Rolling Hash	1	0.6%
44	Suffix Array	1	0.6%
45	String Matching	1	0.6%
46	Combinatorics	1	0.6%
47	Bucket Sort	1	0.6%
48	Hash Function	1	0.6%
49	Enumeration	1	0.6%
50	Ordered Set	1	0.6%
51	Monotonic Queue	1	0.6%
52	Game Theory	1	0.6%
53	Randomized	1	0.6%

No.	Question Title	Link	Difficulty
1	Good Subsequence Queries	Visit	Hard
2	Sum of Beautiful Subsequences	Visit	Hard
3	Minimum Operations to Equalize Binary String	Visit	Hard
4	Maximum Walls Destroyed by Robots	Visit	Hard
5	XOR After Range Multiplication Queries II	Visit	Hard
6	Restricted	Restricted	Hard
7	Restricted	Restricted	Hard
8	Restricted	Restricted	Hard
9	Restricted	Restricted	Hard
10	Restricted	Restricted	Hard
11	Restricted	Restricted	Hard
12	Restricted	Restricted	Hard
13	Restricted	Restricted	Hard
14	Restricted	Restricted	Hard
15	Restricted	Restricted	Hard

Frequently Asked Questions

Common questions about Infosys interviews

Infosys coding rounds are generally more rigorous, aligning closer to product-based companies. Expect 2-3 medium to hard LeetCode-style problems focusing on Data Structures (Trees, Graphs, DP) and Object-Oriented Design. Unlike some service-based peers, Infosys places significant weight on clean, modular code and explaining your thought process verbally during the coding assessment.

Aim for a structured 2-3 month plan. Dedicate 1.5-2 hours daily to DSA (solve 150-200 problems, with 70% medium difficulty), and parallelly prepare for the 'Handshake' test (logical reasoning, verbal) and behavioral questions using the STAR method. Revise core CS fundamentals (OS, DBMS, OOPs) consistently in the final month.

Master Arrays, Strings, Linked Lists, Trees (Binary, BST), and Graphs (BFS/DFS). Dynamic Programming and Recursion are high-frequency. Also, be proficient in HashMaps/Sets for optimization. Practice implementing these from scratch and analyzing time/space complexity (Big O) for every solution, as this is explicitly evaluated.

The biggest mistake is jumping into coding without clarifying requirements and edge cases. Always ask questions about input constraints, expected output format, and potential null/empty inputs. Another frequent error is neglecting the 'Handshake' aptitude test, which is a critical early filter for SDE roles.

Compensate by showcasing exceptional problem-solving clarity and a strong portfolio of projects (GitHub). Highlight transferable skills like analytical thinking. In behavioral rounds, use specific examples from academics, competitions, or volunteer work to demonstrate Infosys's leadership principles like 'Lead by Example' and 'Customer Delight'. A clear career narrative is key.

The process is often lengthy. After applying (usually via campus placement or careers page), expect the online Handshake test within 1-2 weeks. If cleared, technical interviews follow in 2-4 weeks. The final HR/manager interview can take another 2-3 weeks. The entire cycle from test to offer letter commonly spans 1.5 to 3 months, so patience is required.

SDE-1 focuses on core coding, implementation, and learning. SDE-2 expects design capability (low-level, some system design), mentoring juniors, and project ownership. SDE-3 requires strong system design, architecture, client interaction, and technical leadership. Preparation must scale: SDE-1: DSA-heavy; SDE-2: DSA + Design; SDE-3: System Design + Strategic Thinking.

Prioritize LeetCode (filter by company tags for Infosys) and GeeksforGeeks company-specific articles. For the 'Handshake' test, practice with past Infosys aptitude papers. Use platforms like InterviewBit or Grokking the System Design Interview for design rounds. Critically, study Infosys's 9 Leadership Principles and prepare 8-10 behavioral stories (STAR format) that map to them.

Infosys Questions

Topic Frequency Analysis

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Frequently Asked Questions