Round 1 1. Given 2 sorted arrays, merge those arrays in N + M time complexity 2. Flatten the array of unknown depth `[1,2,3,[4,5,6],7,[8,[9,[10]]]]` 3. build Chessboard using HTML CSS Round 2 1. how does cookie work? 2. How does SSO work? 3. http vs https cookie 4, given a tree structure object where each node has value and left and right children. then, find the max sum alogn the path. 5. Create a Front End component Architecture design of Social messaging app similar like WhatsApp and explain the reasoning for going with that component structure Round 3 1. Find the next permutation of the given number 2. How do you analyze the site performance? What steps do you take to improve that? 3. What's your role and responsibilities in current org? team size etc.