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Citadel Questions

Here are the LeetCode questions for Citadel.

Total: 121

Easy: 12

Medium: 73

Hard: 36

Progress: 0%

Rank	Topic	Frequency	Percentage
1	Array	51	42.1%
2	String	39	32.2%
3	Dynamic Programming	27	22.3%
4	Hash Table	24	19.8%
5	Math	21	17.4%
6	Depth-First Search	14	11.6%
7	Design	14	11.6%
8	Breadth-First Search	13	10.7%
9	Stack	12	9.9%
10	Sorting	12	9.9%
11	Two Pointers	11	9.1%
12	Tree	10	8.3%
13	Matrix	9	7.4%
14	Binary Tree	9	7.4%
15	Binary Search	8	6.6%
16	Backtracking	8	6.6%
17	Greedy	8	6.6%
18	Graph Theory	6	5.0%
19	Heap (Priority Queue)	6	5.0%
20	Bit Manipulation	5	4.1%
21	Trie	5	4.1%
22	Recursion	5	4.1%
23	Database	5	4.1%
24	Divide and Conquer	4	3.3%
25	Queue	4	3.3%
26	Simulation	4	3.3%
27	Linked List	3	2.5%
28	Topological Sort	3	2.5%
29	Memoization	3	2.5%
30	Sliding Window	3	2.5%
31	Data Stream	3	2.5%
32	Enumeration	3	2.5%
33	Prefix Sum	3	2.5%
34	Union-Find	2	1.7%
35	Binary Search Tree	2	1.7%
36	Rolling Hash	2	1.7%
37	Monotonic Stack	2	1.7%
38	Doubly-Linked List	2	1.7%
39	Hash Function	2	1.7%
40	Geometry	1	0.8%
41	Concurrency	1	0.8%
42	Merge Sort	1	0.8%
43	String Matching	1	0.8%
44	Counting	1	0.8%
45	Number Theory	1	0.8%
46	Monotonic Queue	1	0.8%
47	Eulerian Circuit	1	0.8%
48	Randomized	1	0.8%
49	Shortest Path	1	0.8%
50	Bitmask	1	0.8%

No.	Question Title	Link	Difficulty
1	Design Spreadsheet	Visit	Medium
2	Maximum Total Damage With Spell Casting	Visit	Medium
3	Length of Longest Subarray With at Most K Frequency	Visit	Medium
4	Minimum Equal Sum of Two Arrays After Replacing Zeros	Visit	Medium
5	Longest Non-decreasing Subarray From Two Arrays	Visit	Medium
6	Restricted	Restricted	Hard
7	Restricted	Restricted	Hard
8	Restricted	Restricted	Hard
9	Restricted	Restricted	Hard
10	Restricted	Restricted	Hard
11	Restricted	Restricted	Hard
12	Restricted	Restricted	Hard
13	Restricted	Restricted	Hard
14	Restricted	Restricted	Hard
15	Restricted	Restricted	Hard

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Common questions about Citadel interviews