Cisco vs Infosys Interview Questions
Cisco lists 87 LeetCode interview questions while Infosys lists 105. They share 30 problems — 34% of Cisco's bank and 29% of Infosys's. Focus on the overlap first, then drill into 57 Cisco-only and 75 Infosys-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 30 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cisco and Infosys.
Step 2 — Company-specific depth: Add Cisco-specific problems like Predict the Winner, Lucky Numbers in a Matrix, Fizz Buzz and Infosys-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Infosys skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
30 Shared Questions
High-priority problems to practice for both Cisco and Infosys.
| Problem | Difficulty |
|---|---|
| Longest Palindromic Substring | Medium |
| House Robber | Medium |
| Rotate Image | Medium |
| Spiral Matrix | Medium |
| Merge Intervals | Medium |
| Maximum Subarray | Medium |
| Two Sum | Easy |
| Valid Parentheses | Easy |
| Trapping Rain Water | Hard |
| Longest Substring Without Repeating Characters | Medium |
| Linked List Cycle | Easy |
| Merge Sorted Array | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Number of Islands | Medium |
| Move Zeroes | Easy |
| 3Sum | Medium |
| Longest Consecutive Sequence | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Add Two Numbers | Medium |
| Gas Station | Medium |
| Group Anagrams | Medium |
| Valid Palindrome | Easy |
| Jump Game | Medium |
| Find Minimum in Rotated Sorted Array | Medium |
| Subarray Sum Equals K | Medium |
| Missing Number | Easy |
| Reverse Words in a String | Medium |
| Product of Array Except Self | Medium |
| Climbing Stairs | Easy |
| Edit Distance | Medium |
Unique to Cisco (57)
Problems in Cisco's list that do not appear at Infosys.
Unique to Infosys (75)
Problems in Infosys's list that do not appear at Cisco.
Frequently Asked Questions
How many LeetCode questions do Cisco and Infosys share?
Cisco and Infosys share 30 LeetCode interview questions. 57 problems appear only in Cisco's list and 75 appear only in Infosys's list.
What topics overlap most between Cisco and Infosys?
The most common shared topics between Cisco and Infosys are Array (21 shared questions), Two Pointers (9 shared questions), Dynamic Programming (8 shared questions), String (7 shared questions), Hash Table (7 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cisco or Infosys?
Cisco has 24 Easy, 50 Medium, and 13 Hard questions. Infosys has 32 Easy, 57 Medium, and 16 Hard questions. Infosys has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Cisco and Infosys?
Start with the 30 shared problems since they cover what both companies ask most often. Then add 20 Cisco-specific and 20 Infosys-specific questions to round out your prep.