Coding challenge over email 1. WAP to convert string to Long 2. WAP to insert a node in a trinary tree Phone interview 1: resume questions, why zillow process vs thread hash, bst, running times hash vs bst java garbage collector algorithm Abstract class vs interfaces Code - WAP to find the first unique character in a string Phone interview 2: Code - Given a file containing all possible numbers on a 32-bit architecture, 4 numbers are missing. Find the 4 missing numbers.