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Citadel Questions

Here are the LeetCode questions for Citadel.

Total: 117
Easy: 12
Medium: 70
Hard: 35
Progress: 0%

Topic Frequency Analysis

All Topics

Rank Topic Frequency Percentage
1 Array 50
42.7%
2 String 37
31.6%
3 Dynamic Programming 25
21.4%
4 Hash Table 23
19.7%
5 Math 21
17.9%
6 Depth-First Search 14
12.0%
7 Design 13
11.1%
8 Breadth-First Search 13
11.1%
9 Stack 12
10.3%
10 Two Pointers 11
9.4%
11 Sorting 11
9.4%
12 Tree 10
8.5%
13 Matrix 9
7.7%
14 Binary Tree 9
7.7%
15 Binary Search 8
6.8%
16 Backtracking 8
6.8%
17 Greedy 6
5.1%
18 Heap (Priority Queue) 6
5.1%
19 Graph Theory 6
5.1%
20 Database 5
4.3%
21 Bit Manipulation 5
4.3%
22 Recursion 5
4.3%
23 Divide and Conquer 4
3.4%
24 Simulation 4
3.4%
25 Queue 4
3.4%
26 Trie 4
3.4%
27 Topological Sort 3
2.6%
28 Data Stream 3
2.6%
29 Linked List 3
2.6%
30 Memoization 3
2.6%
31 Enumeration 3
2.6%
32 Sliding Window 3
2.6%
33 Prefix Sum 3
2.6%
34 Union-Find 2
1.7%
35 Hash Function 2
1.7%
36 Rolling Hash 2
1.7%
37 Binary Search Tree 2
1.7%
38 Doubly-Linked List 2
1.7%
39 Monotonic Stack 2
1.7%
40 String Matching 1
0.9%
41 Bitmask 1
0.9%
42 Geometry 1
0.9%
43 Number Theory 1
0.9%
44 Monotonic Queue 1
0.9%
45 Merge Sort 1
0.9%
46 Shortest Path 1
0.9%
47 Randomized 1
0.9%
48 Counting 1
0.9%
49 Eulerian Circuit 1
0.9%
50 Concurrency 1
0.9%
No. Question Title Link Difficulty Solved
1 Maximum Total Damage With Spell Casting Visit Medium
2 Length of Longest Subarray With at Most K Frequency Visit Medium
3 Minimum Equal Sum of Two Arrays After Replacing Zeros Visit Medium
4 Longest Non-decreasing Subarray From Two Arrays Visit Medium
5 Minimum Operations to Make Numbers Non-positive Visit Hard
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