Triangle pattern of numbers in Python

Question

Hi so I got a problem with a nested loop where the output must be like this:

but now I only know to do this which is:

and this is my code currently:

def number(n):
    num = 0
    for i in range(0, n):
        num = 10

        for j in range(0, i + 1):
            print(num, end="")
            num = num + 10
        print("\r")
n = 5
number(n)

so how I change the code so that the output should be the same as the output needed?

Can you think of a rule that tells you what number to use at the start of a line? Can you think of a way to use that rule to change the numbers that you print? — Karl Knechtel
– Karl Knechtel, Commented Mar 25, 2020 at 1:26
It is probably better to work this out yourself because this question is not about programming knowledge or technical difficulties, but problem-solving skills, which the question is trying to help you develop. — Gerard Sexton
– Gerard Sexton, Commented Mar 25, 2020 at 1:31
@Pandafiqz, keep an eye on the variable num and see where it's being changed. Debug (or simply dry run) the code and see when the value is updated and if it's being updated correctly. — dvlper
– dvlper, Commented Mar 25, 2020 at 1:34

huy · Accepted Answer · 2020-03-25 02:33:01Z

1

You can try this:

def contnum(n): 
    for i in range(0, n): 
        for j in range(0, i + 1): 
          print(i * 10 + 10, end="") 
          i = i + 1
        print("\r") 

n = 5
contnum(n)

Output:

edited Mar 25, 2020 at 2:33

answered Mar 25, 2020 at 2:00

huy

1,9943 gold badges18 silver badges54 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Christopher Saia · Accepted Answer · 2020-03-25 01:49:29Z

0

change the first num to 10 and get rid of the second num.

def number(): 
  num = 10 
  for i in range(0, num): 
    for j in range(0, i + 1): 
    print(num, end="") 
    num = num + 10 
  print(" ") 
number()

You should try to shorten this code a little:)

answered Mar 25, 2020 at 1:49

Christopher Saia

251 silver badge7 bronze badges

Collectives™ on Stack Overflow

Triangle pattern of numbers in Python

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related