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!pip install jovian --upgrade --quiet
import jovian

Question 1: The user will enter a list of numbers and a seperate number.The program will display the index at which the number is present in the list.If the number is absent,it'll return-1. Do NOT use built in functions for searching.

#Taking user input of numbers of list
list=[]
num=int(input("Enter number of elements in the list:"))
for i in range(num):
    a1=int(input("Enter a number in the list"))
    list.append(a1)
print(list)

#Entering the seperate number whose index is to be found
number_to_be_matched=int(input("enter the whose index you want to see in the list"))

# Checking the number in the list and finding its index number
flag=0
for i in range(num):
    if list[i]==number_to_be_matched:
        print("The index number of the entered number is {} ".format(i))
        flag=1
        break
if flag!=1:
        print('1')
Enter number of elements in the list:5 Enter a number in the list4 Enter a number in the list5 Enter a number in the list6 Enter a number in the list8 Enter a number in the list7 [4, 5, 6, 8, 7] enter the whose index you want to see in the list6 The index number of the entered number is 2

Question 2: The user will enrer a list of numbers the program should return the third largest number. Do NOT sort the list. Your program should display 0 if the list has insufficient numbers.

#Taking user input of numbers of list
list1=[]
num=int(input("Enter number of elements in the list:"))
for i in range(num):
    a1=int(input("Enter a number in the list"))
    list1.append(a1)
print(list1)

#Finding the third largest number
if num>2:
    for i in range(1,3):
        for i in range(0,list1.count(max(list1))):
            list1.remove(max(list1))
    print ("Third maximum number of the list is ", max(list1))
else:
    print("0")
Enter number of elements in the list:6 Enter a number in the list2 Enter a number in the list4 Enter a number in the list1 Enter a number in the list4 Enter a number in the list6 Enter a number in the list2 [2, 4, 1, 4, 6, 2] Third maximum number of the list is 2