mathPlay

this project is a math play that gamer answer 10 compersion + and - then save in file and show as sorted as count of right answer and min time

• in this project use
  • Scanner
  • while
  • switch case
  • ArrayList
  • Random
  • custom Exception
  • Instant.now()
  • Duration.between for get diff between start time and end time
  • File
  • FileReader (ready() , read() , close())
  • FileWriter (append() , close())
  • lambda
  • stream()
  • nested for