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

Explanation:

Find the two repeating elements in a given array

You are given an array of n+2 elements. All elements of the array are in range 1 to n. And all elements occur once except two numbers which occur twice. Find the two repeating numbers.

For example, array = {4, 2, 4, 5, 2, 3, 1} and n = 5

The above array has n + 2 = 7 elements with all elements occurring once except 2 and 4 which occur twice. So the output should be 4 2.

Answer 2

Answer:

# Program in python for giving output as distinct elements

# function to delete duplicate entries

def deleteDup(list1):

length = len(list1)  #Checking the length of list for 'for' loop

newList = [] #Defining a new list for adding unique elements

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

# empty list for taking the elements in list

list1 = []

# number of elements in the list

inp = int(input(" Enter number of elements : "))

#Taking the input from the user

for i in range(inp):

a = int(input("Enter the elements of the list: "))

list1.append(a)

#Printing the list

print("The list entered is:",list1)

# list without duplicate elements

print("The list without duplicate elements is:", deleteDup(list1))

OUTPUT:

Enter the number of elements 6

Enter the elements of the list: 12

Enter the elements of the list: 14

Enter the elements of the list: 12

Enter the elements of the list: 12

Enter the elements of the list: 31

Enter the elements of the list: 14

The list entered is: [12, 14, 12, 12, 31, 14]

The list without duplicate elements is: [12, 14, 31]

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