Citadel vs Ola Cabs Interview Questions
Citadel lists 101 LeetCode interview questions while Ola Cabs lists 24. They share 11 problems — 11% of Citadel's bank and 46% of Ola Cabs's. Focus on the overlap first, then drill into 90 Citadel-only and 13 Ola Cabs-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 11 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and Ola Cabs.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Minimum Knight Moves, Delete and Earn and Ola Cabs-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
11 Shared Questions
High-priority problems to practice for both Citadel and Ola Cabs.
| Problem | Difficulty |
|---|---|
| Binary Tree Maximum Path Sum | Hard |
| Best Time to Buy and Sell Stock | Easy |
| Number of Islands | Medium |
| Group Anagrams | Medium |
| Validate Binary Search Tree | Medium |
| Trapping Rain Water | Hard |
| Climbing Stairs | Easy |
| Alien Dictionary | Hard |
| House Robber | Medium |
| 3Sum | Medium |
| Container With Most Water | Medium |
Unique to Citadel (90)
Problems in Citadel's list that do not appear at Ola Cabs.
Unique to Ola Cabs (13)
Problems in Ola Cabs's list that do not appear at Citadel.
| Problem | Difficulty |
|---|---|
| Longest Substring Without Repeating Characters | Medium |
| Add Two Numbers | Medium |
| Two Sum | Easy |
| Longest Palindromic Substring | Medium |
| Decode String | Medium |
| Find Pivot Index | Easy |
| Find Minimum in Rotated Sorted Array | Medium |
| Excel Sheet Column Title | Easy |
| First Missing Positive | Hard |
| Delete Node in a Linked List | Medium |
| All Nodes Distance K in Binary Tree | Medium |
| Unique Paths | Medium |
Frequently Asked Questions
How many LeetCode questions do Citadel and Ola Cabs share?
Citadel and Ola Cabs share 11 LeetCode interview questions. 90 problems appear only in Citadel's list and 13 appear only in Ola Cabs's list.
What topics overlap most between Citadel and Ola Cabs?
The most common shared topics between Citadel and Ola Cabs are Array (8 shared questions), Dynamic Programming (5 shared questions), Depth-First Search (4 shared questions), Two Pointers (3 shared questions), Tree (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Ola Cabs?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Ola Cabs has 5 Easy, 14 Medium, and 5 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and Ola Cabs?
Start with the 11 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 13 Ola Cabs-specific questions to round out your prep.