In this shot, we will discuss how to generate a hollow right-angled triangle with stars in Python.
We can print a plethora of patterns with Python. The basic and only prerequisite is a good understanding of how loops work in Python.
Here, we will use simple for loops to generate a hollow right-angled triangle with stars.
A triangle is said to be right-angled if it has an angle equal to 90 degrees on its left side.
We will use 2 for loops:
# Number of rowsn = 5# Loop through rowsfor i in range(1, n+1):# Loop through columnsfor j in range(1, n+1):# Printing Patternif (i == j) or (j == 1) or (i == n):print("*", end=" ")else:print(" ", end=" ")print()
In line 2, we take the input for the number of rows (i.e. the length of the triangle).
In line 4, we create a for loop to iterate through the number of rows.
In line 6, we create an inner nested for loop to iterate through the number of columns.
From lines 8 to 11, we use conditional statements to create the pattern. The end statement helps to stay on the same line.
In line 12, we use the print() statement to move to the next line.