Citadel Interview ExperienceTop citadel interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1First Repeating Element152452Find the Maximum Repeating Number in Array100533Best Time to Buy and Sell Stock LeetCode Solution82124A Product Array Puzzle78785Group Anagrams LeetCode Solution70786Asteroid Collision LeetCode Solution70367Product of Array Except Self LeetCode Solution65108Trapping Rain Water Leetcode Solution58699Word Ladder LeetCode Solution580510Coin Change 2 Leetcode Solution575611Insert Delete GetRandom O(1) Leetcode Solution538212Maximum Product of Three Numbers LeetCode Solution533313Printing brackets in Matrix Chain Multiplication Problem524814Time Based Key-Value Store LeetCode Solution504615Construct Binary Tree from Given Inorder and Preorder Traversals503416Find Triplet in Array With a Given Sum501117Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution455218Three way partitioning of an array around a given range450919Length of Longest valid Substring442420Count of index pairs with equal elements in an array440621Minimum operation to make all elements equal in array405022Count of Triplets With Sum Less than Given Value402923Check if a given array contains duplicate elements within k distance from each other395324Ugly Number II LeetCode Solution394725Longest subarray not having more than K distinct elements391626LRU Cache Implementation390827Kth Smallest Element in a BST Leetcode Solution386528Priority Queue using doubly linked list385029LRU Cache Leetcode Solution380430Difference between highest and least frequencies in an array3796