Pattern 5

Easy

Inverted star triangle

Problem

Print an inverted star triangle for a given size n.

In simple words

Use one loop for the rows and another for what goes in each row to draw the shape.

To flip a triangle, count down instead of up: row i prints n-i+1 stars. Every inverted pattern in this set comes from the same substitution.

←→stepspaceplay

rows5

1/7

Optimal

timeO(n^2)spaceO(1)

1// n = 5 produces:2// * * * * *3// * * * *4// * * *5// * *6// *7 8for i in 1..n:9  for j in 1..(n-i+1): print('* ')10  newline

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