Write a method print_triangle which takes at its input an integer representing the number of rows to print, and prints out a right triangle consisting of * characters, one line per row. For example, print_triangle(5) should print out:

triangle.rb

def print_triangle(rows)
  for j in 1..rows do
     for i in 1..j do
         print "*" * 1
     end
     puts
    end
end

i just dont get how this works, yet it does