Assignment 1: Loops and Iteration
1. Write a program to print the first 10 natural numbers using a while loop.
->
i=1
while(i <= 10):
print(i, end=" ")
i += 1
Output:
1 2 3 4 5 6 7 8 9 10
2. Write a program print the following pattern using while loop.
12
123
1234
12345
->
i=1
while i<=5:
j=1
while j <=i:
print(j,end=" ")
j+=1
print("\n")
i+=1
Output:
1
12
123
1234
12345
3. Write a program to print the same no 2 pattern using a for loop.
->
for i in range(1, 6):
for j in range(1, i + 1):
print(j, end=" ")
print()
Output:
12
123
1234
12345
4. Write a program to print multiplication table of a given number by the user
->
num = int(input("Enter the number: "))
print("Multiplication Table of", num)
for i in range(1, 11):
print(num,"X",i,"=",num * i)
Output:
Enter a number: 9
9x1=9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
9 x 5 = 45
9 x 6 = 54
9 x 7 = 63
9 x 8 = 72
9 x 9 = 81
9 x 10 = 90
5. Write a program to print the Fibonacci series.
->
n = int(input("Enter the value of 'n': "))
a=0
b=1
sum = 0
count = 1
print("Fibonacci Series: ", end = " ")
while(count <= n):
print(sum, end = " ")
count += 1
a=b
b = sum
sum = a + b
count += 1
a=b
b = sum
sum = a + b
Output:
Enter the value of 'n': 16
Fibonacci Series: 0 1 3 8 21 55 144 377
6. Write a program to check whether a given user's number is prime or not.
->
number = int(input("Enter any number: "))
if number > 1:
for i in range(2, number):
if (number % i) == 0:
print(number, "is not a prime number")
break
else:
print(number, "is a prime number")
else:
print(number, "is not a prime number")
Output:
Enter a number: 13
13 is a prime number
Enter a number: 10
10 is not a prime number
7. Write a program to find the factorial of a number.
->
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
num = int(input("Enter any number: "))
print("Factorial of", num, "is", factorial(num))
Output:
Enter a number: 5
The factorial of 5 is 120
Enter a number: 0
The factorial of 0 is 1
8. Write a program to find the sum of natural numbers entered by the user.
->
num = int(input("Enter any natural number : "))
if num >= 0 :
summ = 0
for i in range(0,num + 1) :
summ = summ + i
print("The sum is {}" .format(summ))
else:
print("Kindly enter a Natural number")
Output:
Enter a number: 16
The sum is 136
9. Write a program to find the sum of all even numbers between 1 to n.
->
n=int(input('Enter a number:'))
sum=0
for x in range(2, n+1, 2):
sum =sum+x
print ('Sum of all even numbers between 1 and ', n, ' is :', sum)
Output:
Enter the number: 10
Sum of all even numbers between 1 and 10 is 30
10.Write a program to check whether a given number is a palindrome or not.
->
def is_palindrome(num):
return str(num) == str(num)[::-1]
num=int(input('Enter a number:'))
if is_palindrome(num):
print(num, "is a palindrome")
else:
print(num, "is not a palindrome")
Output:
Enter a number: 121
121 is a palindrome number
11.Write a program to print the following pattern:
**
***
****
*****
****
***
**
->
n=5
for i in range(1, n+1):
print("* " * i)
for i in range(n-1, 0, -1):
print("* " * i)
Output:
**
***
****
*****
****
***
**
