Citadel Interview ExperienceTop citadel interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1First Repeating Element153222Find the Maximum Repeating Number in Array101193Best Time to Buy and Sell Stock LeetCode Solution82734A Product Array Puzzle79465Group Anagrams LeetCode Solution71666Asteroid Collision LeetCode Solution70837Product of Array Except Self LeetCode Solution65838Trapping Rain Water Leetcode Solution59289Word Ladder LeetCode Solution586410Coin Change 2 Leetcode Solution582311Insert Delete GetRandom O(1) Leetcode Solution547812Maximum Product of Three Numbers LeetCode Solution538713Printing brackets in Matrix Chain Multiplication Problem530914Time Based Key-Value Store LeetCode Solution510815Find Triplet in Array With a Given Sum510416Construct Binary Tree from Given Inorder and Preorder Traversals509417Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution460918Three way partitioning of an array around a given range457219Length of Longest valid Substring448020Count of index pairs with equal elements in an array446021Count of Triplets With Sum Less than Given Value414322Minimum operation to make all elements equal in array409423Ugly Number II LeetCode Solution402724Check if a given array contains duplicate elements within k distance from each other399825LRU Cache Implementation397926Longest subarray not having more than K distinct elements396327Kth Smallest Element in a BST Leetcode Solution391928Priority Queue using doubly linked list390129LRU Cache Leetcode Solution386930Difference between highest and least frequencies in an array3846