5/7-21/7 2018 Exercises Arrays Questions Submitters elie tzookb May 14th 2018 Exercises Trees: Is This a Binary Search Tree? (Medium) Heaps: Find the Running Median (Hard) Tries: Contacts (Hard) Submitters elie michal.miszczyszyn Ali.Uz tzookb May 1st 2018 Exercises link link Submitters elie, michal.miszczyszyn tzookb