Page 531 - Computer Science V2.0 Class 11

Program 41: Write a function that takes a list as an input and returns the middle element of the list. If the list has even
number of elements, then it returns average of both elements.

Ans. def findMiddleElement(inputList):
'''
Objective : To find middle element of the list
Input Parameter : inputList - list
Return Value : numeric value

'''
length = len(inputList)
if length == 0:
return None # Return None for an empty list
elif length % 2 == 1: # Odd number of elements
middleIndex = length // 2
return inputList[middleIndex]
else: # Even number of elements
middleIndex1 = length // 2 - 1
middleIndex2 = length // 2
middleElement1 = inputList[middleIndex1]

middleElement2 = inputList[middleIndex2]
return (middleElement1 + middleElement2) / 2
# Example usage:
myListOdd = [1, 2, 3, 4, 5]
middleResultOdd = findMiddleElement(myListOdd)
myListEven = [1, 2, 3, 4]
middleResultEven = findMiddleElement(myListEven)
if middleResultOdd is not None:

print(f"Middle element (odd): {middleResultOdd}")
if middleResultEven is not None:
print(f"Middle element (even): {middleResultEven}")
Unsolved

1. Write a program to accept temperature in Fahrenheit and print the temperature in Celsius. Note: Formula for
conversion
C = (F-32) * 5 / 9
2. Write a program to accept marks in three subjects and display the percentage of marks. Assume the maximum
marks in each subject is 40.
3. Write a program to accept a number and print its square and cube.
4. Write a program that accepts the radius, r, height, h and slant height, sh of a cone, and calculates its
volume and surface area. Save the file as cone.py. Also, execute the program and write the output in the
space provided.
2
The volume of a cone = (1 / 3) πr h cubic units
Surface area = π * r (r + L)

Practical 517