Top 10 loop questions in python For interview
1.Write a program to find factorial of given number.
fact=1
i=1
n=int(input(“enter the number”))
while i<=n:
fact=fact*i
i=i+1
print(fact)
Output:
enter the number4
24
2.Write a program to find Fibonacci Series.
n=int(input(“how many terms???”))
n1=0
n2=1
count=0
for i in range(1,n):
print(n1,end=’ ‘)
count=n1+n2
n1=n2
n2=count
Output: how many terms???10
0 1 1 2 3 5 8 13 21 34
3. Write a program to check whether the given number is Armstrong number or not.
n=372
sum=0
p=n
while n>0:
x=int(n%10)
sum=sum +x*x*x
n=n/10
if p==sum:
print(“%i is Armstrong number “%p)
else:
print(“%i is not Armstrong number “%p)
Output:
153 is Armstrong number
-
Write a program to check whether the given number is Prime number or not.
n=int(input(“Enter the number”))
if n>1:
for i in range(2,n):
if (n%i==0):
print(“%i is not prime number “%n)
break
else:
print(“%i is prime number “%n)
else:
print(“%i is not prime number “%n)
Output:
Enter the number97
97 is prime number
-
Write a program to check whether the given number is Perfect number or not.
n=int(input(“Enter the number”))
sum=0
for i in range(1,n):
if n%i==0:
sum=sum+i
print(sum)
if sum==n:
print(“%i is perfect number “%n)
else:
print(“%i is not perfect number “%n)
Output:
Enter the number28
28 is perfect number
6.Write a program to find Armstrong Numbers in an interval(1 to 1000).
for n in range(1,1001):
p=n
sum=0
while p>0:
x=int(p%10)
sum=sum+x*x*x
p=int(p/10)
if sum==n:
print(n)
Output:
1
153
370
371
407
7.Write a program to print following Output:
****
****
****
****
i=1
while i<=4:
j=1
while j<=4:
print(“*”,end=”)
j=j+1
print()
i=i+1
Output:
****
****
****
****
8.Write a program to print following Output:
*
**
***
****
i=1
while i<=4:
j=1
while j<=i:
print(“*”,end=”)
j=j+1
print()
i=i+1
Output:
*
**
***
****
-
Write a program to print following Output:
*
**
***
****
i=1
while i<=4:
k=4
while k>i:
print(‘ ‘,end=”)
k=k-1
j=1
while j<=i:
print(“*”,end=”)
j=j+1
print()
i=i+1
Output:
*
**
***
****
10.Write a program to print 1 to 10 multiplication table.
i=1
while i<=10:
j=1
while j<=10:
print(i*j ,end=’\t’)
j=j+1
print()
i=i+1
Output:
1 2 3 4 5 6 7 8 9 10
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
4 8 12 16 20 24 28 32 36 40
5 10 15 20 25 30 35 40 45 50
6 12 18 24 30 36 42 48 54 60
7 14 21 28 35 42 49 56 63 70
8 16 24 32 40 48 56 64 72 80
9 18 27 36 45 54 63 72 81 90
10 20 30 40 50 60 70 80 90 100
