Time Complexity and difference between Link List and Array, queue vs stack, can stack be implemented with queue string is palindrome valid parenthesis puzzle -> At a garden shop they’re selling Magic Grass, a patch of sod that doubles in size every day. A man goes to buy some figures that his garden is big enough that if he buys one patch, it will cover his garden in fourteen days, because each day it doubles in size. So he decides to speed up the process, and buys two patches of sod. How many days will it now take for the Magic Grass to cover his garden