Citadel vs SAP Interview Questions
Citadel lists 101 LeetCode interview questions while SAP lists 42. They share 8 problems — 8% of Citadel's bank and 19% of SAP's. Focus on the overlap first, then drill into 93 Citadel-only and 34 SAP-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 8 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and SAP.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Binary Tree Maximum Path Sum, Minimum Knight Moves and SAP-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Citadel skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
8 Shared Questions
High-priority problems to practice for both Citadel and SAP.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Number of Islands | Medium |
| Group Anagrams | Medium |
| Trapping Rain Water | Hard |
| Maximal Square | Medium |
| Container With Most Water | Medium |
Unique to Citadel (93)
Problems in Citadel's list that do not appear at SAP.
Unique to SAP (34)
Problems in SAP's list that do not appear at Citadel.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Movie Rating | Medium |
| Maximum Path Quality of a Graph | Hard |
| Count the Number of Infection Sequences | Hard |
| Count Increasing Quadruplets | Hard |
| Maximum Students Taking Exam | Hard |
| Longest Common Prefix | Easy |
| Valid Parentheses | Easy |
| Maximum Subarray | Medium |
| Longest Palindromic Substring | Medium |
| Palindrome Number | Easy |
| Search a 2D Matrix | Medium |
Frequently Asked Questions
How many LeetCode questions do Citadel and SAP share?
Citadel and SAP share 8 LeetCode interview questions. 93 problems appear only in Citadel's list and 34 appear only in SAP's list.
What topics overlap most between Citadel and SAP?
The most common shared topics between Citadel and SAP are Array (7 shared questions), Dynamic Programming (3 shared questions), Hash Table (2 shared questions), Sorting (2 shared questions), Matrix (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or SAP?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. SAP has 14 Easy, 21 Medium, and 7 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and SAP?
Start with the 8 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 SAP-specific questions to round out your prep.