**Round 1:**\n* Given an array of cards, how would you shuffle the array in a uniform distribution?\nhttps://leetcode.com/problems/shuffle-an-array\n\n**Round 2:**\n* Given a streaming method to add volume to a stock, how would you get the top k stocks in volume?\n\n**Round 3:**\n* Given a N x N grid, find the number of paths (up, down, left, right) given a set number of jumps you can perform and a starting point.\n\n**Round 4:**\n* Design a system that keeps the average travel time between stations.

Round 1:\n Given an array of cards, how would you shuffle the array in a uniform distribution?\nhttps://leetcode.com/problems/shuffle-an-array\n\nRound 2:\n Giv