Cisco vs Intel Interview Questions
Cisco lists 87 LeetCode interview questions while Intel lists 25. They share 15 problems — 17% of Cisco's bank and 60% of Intel's. Focus on the overlap first, then drill into 72 Cisco-only and 10 Intel-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 15 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cisco and Intel.
Step 2 — Company-specific depth: Add Cisco-specific problems like Longest Palindromic Substring, House Robber, Predict the Winner and Intel-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Cisco skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
15 Shared Questions
High-priority problems to practice for both Cisco and Intel.
| Problem | Difficulty |
|---|---|
| Rotate Image | Medium |
| LRU Cache | 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 |
| Add Two Numbers | Medium |
| Valid Palindrome | Easy |
| Reverse Words in a String | Medium |
| Climbing Stairs | Easy |
Unique to Cisco (72)
Problems in Cisco's list that do not appear at Intel.
| Problem | Difficulty |
|---|---|
| Longest Palindromic Substring | Medium |
| House Robber | Medium |
| Predict the Winner | Medium |
| Lucky Numbers in a Matrix | Easy |
| Spiral Matrix | Medium |
| Fizz Buzz | Easy |
| Snakes and Ladders | Medium |
| Number of Valid Words in a Sentence | Easy |
| Maximum Difference Between Increasing Elements | Easy |
| Merge Intervals | Medium |
| Find Third Transaction | Medium |
| Implement Router | Medium |
Unique to Intel (10)
Problems in Intel's list that do not appear at Cisco.
| Problem | Difficulty |
|---|---|
| Find Consecutive Integers from a Data Stream | Medium |
| Maximum Nesting Depth of the Parentheses | Easy |
| Copy List with Random Pointer | Medium |
| Count Primes | Medium |
| Best Time to Buy and Sell Stock II | Medium |
| Reverse Integer | Medium |
| Merge Two Sorted Lists | Easy |
| Palindrome Number | Easy |
| Container With Most Water | Medium |
| Top K Frequent Words | Medium |
Frequently Asked Questions
How many LeetCode questions do Cisco and Intel share?
Cisco and Intel share 15 LeetCode interview questions. 72 problems appear only in Cisco's list and 10 appear only in Intel's list.
What topics overlap most between Cisco and Intel?
The most common shared topics between Cisco and Intel are Array (7 shared questions), Two Pointers (5 shared questions), Hash Table (4 shared questions), Dynamic Programming (4 shared questions), String (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cisco or Intel?
Cisco has 24 Easy, 50 Medium, and 13 Hard questions. Intel has 10 Easy, 14 Medium, and 1 Hard questions. Cisco has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Cisco and Intel?
Start with the 15 shared problems since they cover what both companies ask most often. Then add 20 Cisco-specific and 10 Intel-specific questions to round out your prep.