Java assignment

My assignments are in IntelliJ ide. I am not sure how to send them, but I require help as soon as possible. I need help in algorithm, databases(mongodb & mysql), data structure, design, math (2 questions only). 3/4 short questions under the rest, please see the video. I don’t need the other stuff in the video, only the ones I mentioned. Very short & simple assignment. Please contact with me so that we can talk it out. Thank you