after making the inverse triangle flat right. how to make an upside down triangle left and then combine the two into a perfectly

Question

With the condition that number 1 must be in the middle
https://code.sololearn.com/cfMDtFp5I9nG/?ref=app
https://code.sololearn.com/cEVCjuMsJf7n/?ref=app

Answer 1

How do you want the output to be? those two codes you show outputs the same triangles, I don't understand, what you mean by "number 1 must be in the middle"

Like this?
9 8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1 2
7 6 5 4 3 2 1 2 3
6 5 4 3 2 1 2 3 4
5 4 3 2 1 2 3 4 5
4 3 2 1 2 3 4 5 6
3 2 1 2 3 4 5 6 7
2 1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9

If not then write the expected output so I can understand you.

Answer 2

for the question I asked, I already got the answer.

Answer 3

thank you for the answer, sorry if my question is confused. And thank you this can be an additional reference for me

Answer 4

Okay no problem, happy coding! : )