Recursion Practice Set
#1
def writeNumbers(num):
if num != 0:
print(num)
writeNumbers(num-1)
#2
def factorial(num):
if num ==1:
return num
else:
return num*factorial(num-1)
#3
def multiplyAll(n):
if n ==1 :
return n
else:
return 1/n * multiplyAll(n-1)
#4
def triangle(num):
if num ==1:
return num-5
else:
return num+triangle(num-1)
#5
##char = ""
##num = int(input("enter an int"))
##def printChar(num):
## global num1
## global char
## if num % 2 ==0:
## num1 = num1 //2
## num1 = num1 -1
## for x in range(0,num1,1):
## char += "\\"
## char = char + "^^"
## for x in range(num,num-num1,-1):
## char = char + "/"
## else:
## num1 = num1 //2
## for x in range(0,num1,1):
## char += "\\"
## char = char + "^"
## for x in range(num,num-num1,-1):
## char = char + "/"
## print(char)
##num1 = num
##printChar(num)
#6
def count(num):
if num == 0:
return num
elif str(num)[len(str(num))-1] =="2":
return count(num//10)+1
else:
print(num)
return count(num//10)
x = count(131427732)
print(x)