Question 2 - Long Answer Type Questions (5 Marks each) - Chapter 9 Class 11 - Lists

Write a program to search a number entered by a user in list of 100 numbers and then print the index position of that number. Now swap it with the number 10 places previous to it.

Answer:

Code:

list1=[] 

f= -1  

for i in range( 100 ): 

    list1.append(int(input( "enter a  number" ))) 

search=int(input( "enter the number to  be searched" )) 

for i in range( 100 ): 

    if (search==list1[i]): 

        f=i 

        break 

if (f== -1 ): 

    print( "Number not found" ) 

else: 

    print( "Number found at" , f) 

a=list1[f] 

list1[f]=list1[f -10 ]

list1[f -10 ]=a 

print("New list is", list1)