View All num of num See all Photos Amazon.com www.amazon.com Engaged Employer Overview Reviews Salaries Interviews Jobs Photos Benefits 4.7k Reviews 11k Salaries 6.1k Interviews 10k Jobs Follow Add Interview Follow Add Interview Interview Question Software Engineer Intern Interview Amazon.com Write a program to find all possible pairs in array that sum up to X. With efficiency O(n). What is shared pointer? How will you say a tree is binary tree?Linked list has a loop? Tags: See more , See less 8 Answer Add Tags Answer Interviews > Software Engineer Intern > Amazon.com Add Answers or Comments To comment on this, Sign In or Sign Up.