Citadel Interview ExperienceTop citadel interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1First Repeating Element151262Find the Maximum Repeating Number in Array99263Best Time to Buy and Sell Stock LeetCode Solution80894A Product Array Puzzle77145Asteroid Collision LeetCode Solution69456Group Anagrams LeetCode Solution69327Product of Array Except Self LeetCode Solution64168Trapping Rain Water Leetcode Solution57579Word Ladder LeetCode Solution567710Coin Change 2 Leetcode Solution565411Maximum Product of Three Numbers LeetCode Solution525112Insert Delete GetRandom O(1) Leetcode Solution523913Printing brackets in Matrix Chain Multiplication Problem514314Construct Binary Tree from Given Inorder and Preorder Traversals495515Time Based Key-Value Store LeetCode Solution494616Find Triplet in Array With a Given Sum483917Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution444818Three way partitioning of an array around a given range440519Count of index pairs with equal elements in an array430720Length of Longest valid Substring429721Minimum operation to make all elements equal in array395622Count of Triplets With Sum Less than Given Value388923Check if a given array contains duplicate elements within k distance from each other385924Ugly Number II LeetCode Solution384225LRU Cache Implementation378226Longest subarray not having more than K distinct elements376427Kth Smallest Element in a BST Leetcode Solution376328Priority Queue using doubly linked list372329Difference between highest and least frequencies in an array371830LRU Cache Leetcode Solution3688