Plz share some technical questions for amazon

I asked the following questions for technical round: 1)find if there is any root to leaf path with specified sum in a binary tree? 2)Check if a character link list is palindrome or not? 3)Two questions based on sorting. 4)Write code for minHeapify() operation. 5)write a code for top trending words while you are entering data into same file. 6)Design a datastructure for O(1) time. 7)Write a function that returns the length of the longest leaf-to-leaf path in a binary tree.