Cisco vs Snap Interview Questions
Cisco lists 87 LeetCode interview questions while Snap lists 84. They share 17 problems — 20% of Cisco's bank and 20% of Snap's. Focus on the overlap first, then drill into 70 Cisco-only and 67 Snap-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 17 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cisco and Snap.
Step 2 — Company-specific depth: Add Cisco-specific problems like Longest Palindromic Substring, House Robber, Predict the Winner and Snap-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Snap skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
17 Shared Questions
High-priority problems to practice for both Cisco and Snap.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Word Search II | Hard |
| Longest Substring Without Repeating Characters | Medium |
| Letter Combinations of a Phone Number | Medium |
| Number of Islands | Medium |
| Reverse Linked List | Easy |
| Meeting Rooms II | Medium |
| Word Search | Medium |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Merge k Sorted Lists | Hard |
| Reverse Words in a String | Medium |
| Design Browser History | Medium |
| Product of Array Except Self | Medium |
| Remove K Digits | Medium |
| Min Stack | Medium |
Unique to Cisco (70)
Problems in Cisco's list that do not appear at Snap.
| Problem | Difficulty |
|---|---|
| Longest Palindromic Substring | Medium |
| House Robber | Medium |
| Predict the Winner | Medium |
| Lucky Numbers in a Matrix | Easy |
| Rotate Image | Medium |
| Spiral Matrix | Medium |
| Fizz Buzz | Easy |
| Snakes and Ladders | Medium |
| Number of Valid Words in a Sentence | Easy |
| Maximum Difference Between Increasing Elements | Easy |
| Find Third Transaction | Medium |
| Implement Router | Medium |
Unique to Snap (67)
Problems in Snap's list that do not appear at Cisco.
| Problem | Difficulty |
|---|---|
| Word Ladder | Hard |
| Minimum Window Substring | Hard |
| Design Log Storage System | Medium |
| Making A Large Island | Hard |
| Number of Distinct Islands | Medium |
| Bus Routes | Hard |
| Word Break II | Hard |
| Basic Calculator II | Medium |
| Combination Sum | Medium |
| Bricks Falling When Hit | Hard |
| Alien Dictionary | Hard |
| Closest Binary Search Tree Value | Easy |
Frequently Asked Questions
How many LeetCode questions do Cisco and Snap share?
Cisco and Snap share 17 LeetCode interview questions. 70 problems appear only in Cisco's list and 67 appear only in Snap's list.
What topics overlap most between Cisco and Snap?
The most common shared topics between Cisco and Snap are Array (9 shared questions), String (7 shared questions), Hash Table (5 shared questions), Linked List (4 shared questions), Sorting (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cisco or Snap?
Cisco has 24 Easy, 50 Medium, and 13 Hard questions. Snap has 5 Easy, 52 Medium, and 27 Hard questions. Snap has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Cisco and Snap?
Start with the 17 shared problems since they cover what both companies ask most often. Then add 20 Cisco-specific and 20 Snap-specific questions to round out your prep.