[ Find missing numbers in an array ]
arr=[]size = int(input("Enter the size of the array: "))print("Enter the Element of the array:")for i in range(0,size): num = int(input()) arr.append(num)sum=0for i in range(0,size): sum += arr[i]size2=size+1miss=int((size2*(size2+1))/2)print("Missing Number is: ",abs(miss-sum))
