Lecture Notes on 16 Oct 2017

def main():
  # create pattern 1
  for i in range (1, 7):
    for j in range (1, i + 1):
      print (j, end = " ")
    print ()
  print ()

  # create pattern 2
  for i in range (6, 0, -1):
    for j in range (1, i + 1):
      print (j, end = " ")
    print ()
  print ()

  # create pattern 3
  for i in range (6, 0, -1):
    for j in range (i, 0, -1):
      print (j, end = " ")
    print()
  print ()
  
  # create pattern 4
  for i in range (6, 0, -1):
    for j in range (6, i - 1, - 1):
      print (j, end = " ")
    print ()
  print ()
main()