Round 1: Two coding questions\nhttps://leetcode.com/problems/valid-parentheses/\nhttps://leetcode.com/problems/binary-tree-right-side-view/\n\nRound 2: Two coding questions\n\nGiven a list of fraction expressions, evaluate a target fraction based on the inputs\nExample input: a/b=2, b/d=3, d/c=5, f/h=20\nExample output: find a/c -> a/b * b/d * d/c -> 2 * 3 * 5 = 30\nSimilar to https://leetcode.com/problems/evaluate-division/\n\nGiven a sorted array and target number, find how many times the target number appears in the array.\nVery similar to https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/\n\nRound 3: Design API for downloader library.\n\nRound 4: Behavioral

Round 1: Two coding questions\nhttps://leetcode.com/problems/valid-parentheses/\nhttps://leetcode.com/problems/binary-tree-right-side-view/\n\nRound 2: Two codi