Citadel Interview ExperienceTop citadel interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1First Repeating Element131052Find the Maximum Repeating Number in Array84743Asteroid Collision LeetCode Solution54214Best Time to Buy and Sell Stock LeetCode Solution53725Product of Array Except Self LeetCode Solution52276A Product Array Puzzle52267Group Anagrams LeetCode Solution51028Coin Change 2 Leetcode Solution44669Trapping Rain Water Leetcode Solution428310Word Ladder LeetCode Solution418411Time Based Key-Value Store LeetCode Solution397112Insert Delete GetRandom O(1) Leetcode Solution394713Printing brackets in Matrix Chain Multiplication Problem394414Maximum Product of Three Numbers LeetCode Solution384915Find Triplet in Array With a Given Sum378316Construct Binary Tree from Given Inorder and Preorder Traversals343517Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution338018Count of index pairs with equal elements in an array336119Length of Longest valid Substring326220Three way partitioning of an array around a given range318821Count of Triplets With Sum Less than Given Value305722Minimum operation to make all elements equal in array299123Check if a given array contains duplicate elements within k distance from each other290624Longest subarray not having more than K distinct elements290125LRU Cache Implementation287526LRU Cache Leetcode Solution285327Ugly Number II LeetCode Solution284528Integer Break LeetCode Solution284029Difference between highest and least frequencies in an array278030Priority Queue using doubly linked list2762