Question

Write a program to read a list of elements. Modify this list so that it does not contain any duplicate elements, i.e., all elements occurring multiple times in the list should appear only once.

Answer 1

Program:
#function to remove the duplicate elements
def removeDup(list1):
    #Checking the length of list for 'for' loop
    length = len(list1)
    #Defining a new list for adding unique elements
    newList = []
    for a in range(length):
        #Checking if an element is not in the new List
        #This will reject duplicate values
        if list1[a] not in newList:
            newList.append(list1[a])
    return newList

#Defining empty list
list1 = []

#Asking for number of elements to be added in the list
inp = int(input("How many elements do you want to add in the list? "))

#Taking the input from user
for i in range(inp):
    a = int(input("Enter the elements: "))
    list1.append(a)
    
#Printing the list
print("The list entered is:",list1)

#Printing the list without any duplicate elements
print("The list without any duplicate element is:",removeDup(list1))

OUTPUT:
How many elements do you want to add in the list? 6
Enter the elements: 1
Enter the elements: 1
Enter the elements: 2
Enter the elements: 2
Enter the elements: 3
Enter the elements: 4
The list entered is: [1, 1, 2, 2, 3, 4]
The list without any duplicate element is: [1, 2, 3, 4]