American Express Interview ExperienceTop american-express interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1Valid Anagram Leetcode Solution85572Group Anagrams LeetCode Solution68923Product of Array Except Self LeetCode Solution63954Reducing Dishes LeetCode Solution62595Implementation of Deque using Doubly Linked List59736Subarray with Given Sum56007Same Tree LeetCode Solution53588Subarray Sum Equals k50369Remove Nth Node From End of List Leetcode Solution451510Maximum Length of a Concatenated String with Unique Characters Leetcode Solution388411Convert a normal BST to Balanced BST368712Sliding Window Maximum LeetCode Solution357613Maximum Sum of Non Consecutive Elements321414Smallest Multiple of a Given Number316415Isomorphic Strings LeetCode Solution282416Find the point where a monotonically increasing function becomes positive first time268717Check whether a given Binary Tree is Complete or not264618Check if a queue can be sorted into another queue using a stack247819Convert a String that is Repetition of a Substring of Length K2269