American Express Interview ExperienceTop american-express interview questionsS.NoInterview QuestionNumber of times candidates experienced this question in interviews1Valid Anagram Leetcode Solution85572Group Anagrams LeetCode Solution68913Product of Array Except Self LeetCode Solution63944Reducing Dishes LeetCode Solution62585Implementation of Deque using Doubly Linked List59736Subarray with Given Sum55997Same Tree LeetCode Solution53578Subarray Sum Equals k50369Remove Nth Node From End of List Leetcode Solution451410Maximum Length of a Concatenated String with Unique Characters Leetcode Solution388311Convert a normal BST to Balanced BST368712Sliding Window Maximum LeetCode Solution357413Maximum Sum of Non Consecutive Elements321414Smallest Multiple of a Given Number316415Isomorphic Strings LeetCode Solution282216Find the point where a monotonically increasing function becomes positive first time268617Check 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