Citadel Interview ExperienceTop citadel interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1First Repeating Element153262Find the Maximum Repeating Number in Array101243Best Time to Buy and Sell Stock LeetCode Solution82754A Product Array Puzzle79515Group Anagrams LeetCode Solution71706Asteroid Collision LeetCode Solution70867Product of Array Except Self LeetCode Solution65868Trapping Rain Water Leetcode Solution59389Word Ladder LeetCode Solution586510Coin Change 2 Leetcode Solution582511Insert Delete GetRandom O(1) Leetcode Solution548212Maximum Product of Three Numbers LeetCode Solution538913Printing brackets in Matrix Chain Multiplication Problem531414Time Based Key-Value Store LeetCode Solution511315Find Triplet in Array With a Given Sum510716Construct Binary Tree from Given Inorder and Preorder Traversals509617Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution461318Three way partitioning of an array around a given range457619Length of Longest valid Substring448320Count of index pairs with equal elements in an array446221Count of Triplets With Sum Less than Given Value415022Minimum operation to make all elements equal in array409723Ugly Number II LeetCode Solution403024Check if a given array contains duplicate elements within k distance from each other399825LRU Cache Implementation398526Longest subarray not having more than K distinct elements396627Kth Smallest Element in a BST Leetcode Solution392128Priority Queue using doubly linked list390629LRU Cache Leetcode Solution387730Difference between highest and least frequencies in an array3856