Coding basics · 10 of 20
Star triangle
Return n rows of a triangle as a list of strings: row 1 is "*", row 2 is "**", up to n stars.
Jump to the editor ↓What you need
A loop inside a loop: the inner one runs fully for every step of the outer one. Strings can be built with +=.
for row in range(1, 3):
line = ""
for _ in range(row):
line += "#"
print(line) # "#", then "##"Examples
Input n = 3
Output ["*", "**", "***"]