Problem 🤔 Median is the middle value in an ordered integer list. If the size of the list is even…

Challenge 🤔 Implement a stack (LIFO) using only two queues. The implemented stack should support…

Problem 🤔 An animal shelter holds only dogs and cats and works on a FIFO basis. FIFO -> First in…

Problem 🤔 Given an array of meeting time intervals intervals where intervals[i] = [starti, endi…

Problem 🤔 Imagine a literal stack of plates. If the stack gets too high, it'll fall! So when stacks…

Challenge 🤔 Implement a stack that has a min function, that returns the minimum element. The…