Computer Science Class 11 Practical File.docx

Class 11 state board practical file

1. Computer Science (083)
Class 11 CBSE
Practical File
Q.1 Input a welcome message and display it
print("Welcome to the program")
Output
Welcome to the program
Computer Science courses
Employability skills training
Q. 2 Input two numbers and display the larger / smaller number
num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))
print("Larger number: ", max(num1, num2))
print("Smaller number: ", min(num1, num2))
Output
Enter first number: 55
Enter second number: 33
Larger number: 55
Smaller number: 33
Q.3 Input three numbers and display the largest / smallest
number
num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))
num3 = int(input("Enter third number: "))
print("Largest number: ", max(num1, num2, num3))
print("Smallest number: ", min(num1, num2, num3))
Output
Enter first number: 52
Enter second number: 66
Enter third number: 44
Largest number: 66
Smallest number: 44
Q.4 Generate the following patterns using nested loop.
a) *
**
***
****
*****
for i in range(1, 6):
print("*" * i)
b) 1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
for i in range(5, 0, -1):
print(" ".join([str(x) for x in range(1, i + 1)]))
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2. c) A
AB
ABC
ABCD
ABCDE
for i in range(1, 6):
print("".join([chr(x) for x in range(65, 65 + i)]))
Q.5 Write a program to input the value of x and n and print the
sum of the following series:
a) 1+x+x2+x3+x4+. ..........xn
def sum_of_series(x, n):
result = 0
for i in range(n + 1):
result += x**i
return result
x = int(input("Enter the value of x: "))
n = int(input("Enter the value of n: "))
print("Sum of the series:", sum_of_series(x, n))
Output
Enter the value of x: 5
Enter the value of n: 10
Sum of the series: 12207031
b) 1-x+x2-x3+x4 .................................xn
def sum_of_series(x, n):
result = 0
for i in range(n + 1):
result += (-1)**i * x**i
return result
x = int(input("Enter the value of x: "))
n = int(input("Enter the value of n: "))
print("Sum of the series:", sum_of_series(x, n))
Output
Enter the value of x: 5
Enter the value of n: 10
Sum of the series: 8138021
Q.6 Determine whether a number is a perfect number, an
armstrong number or a palindrome
def is_perfect(num):
sum = 0
for i in range(1, num):
if num % i == 0:
sum += i
return sum == num
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3. def is_armstrong(num):
temp = num
sum = 0
while temp > 0:
digit = temp % 10
sum += digit ** 3
temp //= 10
return sum == num
def is_palindrome(num):
return str(num) == str(num)[::-1]
num = int(input("Enter a number: "))
if is_perfect(num):
print(num, "is a perfect number")
elif is_armstrong(num):
print(num, "is an armstrong number")
elif is_palindrome(num):
print(num, "is a palindrome")
else:
print(num, "is none of the above")
Output
Enter a number: 66
66 is a palindrome
Q.7 Input a number and check if the number is a prime or
composite number
def is_prime(num):
if num > 1:
for i in range(2, num):
if (num % i) == 0:
return False
return True
else:
return False
num = int(input("Enter a number: "))
if is_prime(num):
print(num, "is a prime number")
else:
print(num, "is a composite number")
# Display the terms of a Fibonacci series
def fibonacci(n):
fib = [0, 1]
for i in range(2, n):
fib.append(fib[i-1] + fib[i-2])
return fib
n = int(input("Enter the number of terms: "))
print("Fibonacci series: ", fibonacci(n))
Output
Enter a number: 5
5 is a prime number
Enter the number of terms: 3
Fibonacci series: [0, 1, 1]
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4. Q.8 Display the terms of a Fibonacci series.
def fibonacci(n):
if n <= 0:
return []
elif n == 1:
return [0]
elif n == 2:
return [0, 1]
else:
fib_list = [0, 1]
while len(fib_list) < n:
next_term = fib_list[-1] + fib_list[-2]
fib_list.append(next_term)
return fib_list
n = int(input("Enter the number of terms to display: "))
print("The terms of the Fibonacci series:", fibonacci(n))
Output
Enter the number of terms to display: 10
The terms of the Fibonacci series: [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]
Q.9 Compute the greatest common divisor and least common
multiple of two integers.
def gcd(a, b):
while b != 0:
a, b = b, a % b
return a
def lcm(a, b):
return a * b // gcd(a, b)
a = int(input("Enter the first integer: "))
b = int(input("Enter the second integer: "))
gcd_value = gcd(a, b)
lcm_value = lcm(a, b)
print("The GCD of", a, "and", b, "is", gcd_value)
print("The LCM of", a, "and", b, "is", lcm_value)
Output
Enter the first integer: 18
Enter the second integer: 61
The GCD of 18 and 61 is 1
The LCM of 18 and 61 is 1098
Q.10 Count and display the number of vowels, consonants,
uppercase, lowercase characters in string.
def count_characters(string):
vowels = "AEIOUaeiou"
consonants = "BCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz"
uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
lowercase = "abcdefghijklmnopqrstuvwxyz"
vowel_count = 0
consonant_count = 0
uppercase_count = 0
lowercase_count = 0
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5. for char in string:
if char in vowels:
vowel_count += 1
elif char in consonants:
consonant_count += 1
elif char in uppercase:
uppercase_count += 1
elif char in lowercase:
lowercase_count += 1
return vowel_count, consonant_count, uppercase_count, lowercase_count
string = input("Enter a string: ")
vowel_count, consonant_count, uppercase_count, lowercase_count = count_characters(string)
print("Number of vowels:", vowel_count)
print("Number of consonants:", consonant_count)
print("Number of uppercase characters:", uppercase_count)
print("Number of lowercase characters:", lowercase_count)
Output
Enter a string: Welcome to my School
Number of vowels: 6
Number of consonants: 11
Number of uppercase characters: 2
Number of lowercase characters: 15
Preschool and daycare services
Q.11 Input a string and determine whether it is a palindrome or
not; convert the case of characters in a string.
def is_palindrome(string):
return string == string[::-1]
def convert_case(string):
return string.swapcase()
string = input("Enter a string: ")
if is_palindrome(string):
print("The string is a palindrome.")
else:
print("The string is not a palindrome.")
converted_string = convert_case(string)
print("Converted string:", converted_string)
Output
Enter a string: MADAM
The string is a palindrome.
Converted string: madam
Q.12 Find the largest/smallest number in a list/tuple
def find_min_max(numbers):
return min(numbers), max(numbers)
numbers = [int(num) for num in input("Enter a list of numbers separated by space: ").split()]
minimum, maximum = find_min_max(numbers)
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6. print("The smallest number is:", minimum)
print("The largest number is:", maximum)
Output
Enter a list of numbers separated by space: 55 32 12
The smallest number is: 12
The largest number is: 55
Q.13 Input a list of numbers and swap elements at the even
location with the elements at the odd location.
def swap_elements(numbers):
for i in range(0, len(numbers) - 1, 2):
numbers[i], numbers[i + 1] = numbers[i + 1], numbers[i]
return numbers
numbers = [int(num) for num in input("Enter a list of numbers separated by space: ").split()]
swapped_numbers = swap_elements(numbers)
print("The list after swapping elements:", swapped_numbers)
Output
Enter a list of numbers separated by space: 55 41 63
The list after swapping elements: [41, 55, 63]
Q.14 Input a list/tuple of elements, search for a given element in
the list/tuple.
def search_element(elements, search_item):
if search_item in elements:
return True
else:
return False
elements = [int(num) for num in input("Enter a list of elements separated by space: ").split()]
search_item = int(input("Enter the item to search for: "))
if search_element(elements, search_item):
print("The item was found in the list/tuple.")
else:
print("The item was not found in the list/tuple.")
Output
Enter a list of elements separated by space: 61 24 52
Enter the item to search for: 24
The item was found in the list/tuple.
Q.15 Input a list of numbers and find the smallest and largest
number from the list.
def find_min_max(numbers):
min_num = float('inf')
max_num = float('-inf')
for num in numbers:
if num < min_num:
min_num = num
if num > max_num:
max_num = num
return (min_num, max_num)
numbers = [int(x) for x in input("Enter a list of numbers separated by space: ").split()]
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7. min_num, max_num = find_min_max(numbers)
print("Smallest number:", min_num)
print("Largest number:", max_num)
Output
Enter a list of numbers separated by space: 63 41 75
Smallest number: 41
Largest number: 75
Q.16 Create a dictionary with the roll number, name and marks of
n students in a class and display the names of students who have
scored marks above 75.
n = int(input("Enter the number of students: "))
students = {}
for i in range(n):
roll_number = int(input("Enter the roll number: "))
name = input("Enter the name: ")
marks = int(input("Enter the marks: "))
students[roll_number] = (name, marks)
print("\nList of students who have scored marks above 75:")
for roll_number, (name, marks) in students.items():
if marks > 75:
print(name)
Output
Enter the number of students: 2
Enter the roll number: 1
Enter the name: Rakesh Kumar
Enter the marks: 88
Enter the roll number: 2
Enter the name: Amit Singh
Enter the marks: 58
List of students who have scored marks above 75:
Rakesh Kumar
Q.17 Write a program in python to find the area of Circle using If
Conditions
import math
def area_of_circle(radius):
if radius < 0:
return "Invalid radius. Radius should be a positive number."
else:
area = math.pi * radius**2
return "Area of Circle with radius {} is {}".format(radius, area)
radius = float(input("Enter the radius of the circle: "))
print(area_of_circle(radius))
Output
Enter the radius of the circle: 6
Area of Circle with radius 6.0 is 113.09733552923255
Q.18 Write a program to take input from the user and print reverse
order
def reverse_string(s):
return s[::-1]
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8. string = input("Enter a string: ")
print("The reversed string is:", reverse_string(string))
Output
Enter a string: PYTHON
The reversed string is: NOHTYP
Q.19 Write a program to take two input from the user and
concatenate the strings
def concatenate_strings(s1, s2):
return s1 + s2
string1 = input("Enter the first string: ")
string2 = input("Enter the second string: ")
print("The concatenated string is:", concatenate_strings(string1, string2))
Output
Enter the first string: My
Enter the second string: School
The concatenated string is: MySchool
Preschool and daycare services
Q.20 Write a program to accept list from the used and sort the list
def sort_list(lst):
return sorted(lst)
list = [int(x) for x in input("Enter a list of numbers separated by spaces: ").split()]
print("The sorted list is:", sort_list(list))
Output
Enter a list of numbers separated by spaces: 6 8 4 9 7 5
The sorted list is: [4, 5, 6, 7, 8, 9]
Q.21 Write a program to take input from the user and find the
average of the list
def average_of_list(lst):
return sum(lst) / len(lst)
list = [int(x) for x in input("Enter a list of numbers separated by spaces: ").split()]
print("The average of the list is:", average_of_list(list))
Output
Enter a list of numbers separated by spaces: 6 5 1 8 4 9
The average of the list is: 5.5
Q.22 Write a program to take input from the used and find the
largest and smallest number from the List
def largest_and_smallest_in_list(lst):
return max(lst), min(lst)
list = [int(x) for x in input("Enter a list of numbers separated by spaces: ").split()]
largest, smallest = largest_and_smallest_in_list(list)
print("The largest number in the list is:", largest)
print("The smallest number in the list is:", smallest)
Output
Enter a list of numbers separated by spaces: 6 5 7 1 5
The largest number in the list is: 7
The smallest number in the list is: 1
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