American Express Interview ExperienceTop american-express interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1Valid Anagram Leetcode Solution72542Group Anagrams LeetCode Solution57563Product of Array Except Self LeetCode Solution57074Reducing Dishes LeetCode Solution56425Implementation of Deque using Doubly Linked List52566Subarray with Given Sum49737Same Tree LeetCode Solution46598Subarray Sum Equals k43359Remove Nth Node From End of List Leetcode Solution364910Maximum Length of a Concatenated String with Unique Characters Leetcode Solution325311Convert a normal BST to Balanced BST312912Sliding Window Maximum LeetCode Solution284513Maximum Sum of Non Consecutive Elements272614Smallest Multiple of a Given Number266715Isomorphic Strings LeetCode Solution229316Find the point where a monotonically increasing function becomes positive first time228817Check if a queue can be sorted into another queue using a stack206618Check whether a given Binary Tree is Complete or not206419Convert a String that is Repetition of a Substring of Length K1881