Hi, i'm very new to programming and until now have only been doing very basic tasks and only done a little bit of using arrays.

 I've just been set this problem below, and haven't really got any idea how to do it. Any advice would be great please. I can do the set up and create the first line, but I don't understand how to get it to create multiple lines at random heights.

'Create a program that places N horizontal lines at random heights between the top and the bottom of the canvas, storing the heights in an array.

  Extend 2 by assigning random vertical velocities in the range (-2..2) to the lines. When a line hits the bottom or the top it carries on off the canvas. Store the velocities in an array'

Thankyou in advance to anyone who helps at all =)