patterns(3 rev tri)(f)

def star(n):
    for i in range(n,0,-1):
        for j in range(1,i+1):
            print('*',end=' ')
        print(end='\n')
n=int(input('enter a number:'))
star(n)

#output
enter a number:5
* * * * *
* * * *
* * *
* *
*