Citadel vs Tekion Interview Questions
Citadel lists 101 LeetCode interview questions while Tekion lists 23. They share 5 problems — 5% of Citadel's bank and 22% of Tekion's. Focus on the overlap first, then drill into 96 Citadel-only and 18 Tekion-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 5 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and Tekion.
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 Tekion-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
5 Shared Questions
High-priority problems to practice for both Citadel and Tekion.
| Problem | Difficulty |
|---|---|
| Longest String Chain | Medium |
| Find Median from Data Stream | Hard |
| Trapping Rain Water | Hard |
| Best Time to Buy and Sell Stock III | Hard |
| Rotting Oranges | Medium |
Unique to Citadel (96)
Problems in Citadel's list that do not appear at Tekion.
Unique to Tekion (18)
Problems in Tekion's list that do not appear at Citadel.
Frequently Asked Questions
How many LeetCode questions do Citadel and Tekion share?
Citadel and Tekion share 5 LeetCode interview questions. 96 problems appear only in Citadel's list and 18 appear only in Tekion's list.
What topics overlap most between Citadel and Tekion?
The most common shared topics between Citadel and Tekion are Array (4 shared questions), Two Pointers (3 shared questions), Dynamic Programming (3 shared questions), Sorting (2 shared questions), Hash Table (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Tekion?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Tekion has 1 Easy, 16 Medium, and 6 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and Tekion?
Start with the 5 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 18 Tekion-specific questions to round out your prep.