Citadel Interview Experience

Top citadel interview questions

S.No Interview Question Number of times candidates experienced this question in interviews
1First Repeating Element10123
2Find the Maximum Repeating Number in Array6868
3Asteroid Collision LeetCode Solution3690
4Product of Array Except Self LeetCode Solution3546
5A Product Array Puzzle3418
6Best Time to Buy and Sell Stock LeetCode Solution3272
7Coin Change 2 Leetcode Solution3114
8Find Triplet in Array With a Given Sum2933
9Trapping Rain Water Leetcode Solution2917
10Group Anagrams LeetCode Solution2827
11Word Ladder LeetCode Solution2772
12Printing brackets in Matrix Chain Multiplication Problem2682
13Maximum Product of Three Numbers LeetCode Solution2617
14Time Based Key-Value Store LeetCode Solution2546
15Insert Delete GetRandom O(1) Leetcode Solution2438
16Length of Longest valid Substring2339
17Count of index pairs with equal elements in an array2324
18Count of Triplets With Sum Less than Given Value2315
19Three way partitioning of an array around a given range2190
20Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution2164
21Minimum operation to make all elements equal in array2090
22Longest subarray not having more than K distinct elements2002
23Difference between highest and least frequencies in an array2002
24Construct Binary Tree from Given Inorder and Preorder Traversals1975
25LRU Cache Leetcode Solution1949
26LRU Cache Implementation1933
27Check if a given array contains duplicate elements within k distance from each other1901
28Ugly Number II LeetCode Solution1860
29Kth Smallest Element in a BST Leetcode Solution1818
30Find Median from Data Stream LeetCode Solution1754
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