American Express Interview ExperienceTop american-express interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1Valid Anagram Leetcode Solution81482Group Anagrams LeetCode Solution66023Product of Array Except Self LeetCode Solution62534Reducing Dishes LeetCode Solution60915Implementation of Deque using Doubly Linked List57596Subarray with Given Sum53737Same Tree LeetCode Solution52248Subarray Sum Equals k48369Remove Nth Node From End of List Leetcode Solution426810Maximum Length of a Concatenated String with Unique Characters Leetcode Solution375811Convert a normal BST to Balanced BST354812Sliding Window Maximum LeetCode Solution336813Maximum Sum of Non Consecutive Elements309414Smallest Multiple of a Given Number302115Isomorphic Strings LeetCode Solution268116Find the point where a monotonically increasing function becomes positive first time257217Check whether a given Binary Tree is Complete or not250118Check if a queue can be sorted into another queue using a stack238319Convert a String that is Repetition of a Substring of Length K2167