Brainstorming 04: Mastering Python Lists

Easy Questions (10)

1. Create a list of 5 numbers and display it.
   
   
2. Write a program to find the length of a list without using len().
   
   
3. Add an element to an existing list at the end.
   
   
4. Insert an element at the second position of a list.
   
   
5. Write a program to count occurrences of an element in a list without using count().
   
   
6. Remove the first occurrence of a specific element from a list.
   
   
7. Display all elements of a list using a loop.
   
   
8. Find the sum of all elements in a list.
   
   
9. Write a program to reverse a list using a method.
   
   
10. Create a list with mixed data types and print it.
    
    

Medium Questions (6)

1. Write a program to find the maximum and minimum numbers in a list.
   Input:
   [4, 10, 23, 1, 9]
   Output:
   Maximum: 23, Minimum: 1

2. Sort a list of numbers in ascending and descending order.
   Input:
   [15, 3, 8, 22, 7]
   Output:
   Ascending: [3, 7, 8, 15, 22]
Descending: [22, 15, 8, 7, 3]

3. Write a program to remove duplicates from a list.
   Input:
   [2, 3, 5, 2, 9, 3, 7]
   Output:
   [2, 3, 5, 9, 7]

4. Create two lists, merge them, and sort the resulting list.
   Input:
   List1: [4, 8, 12]
List2: [3, 9, 11]
   Output:
   Merged and Sorted List: [3, 4, 8, 9, 11, 12]

5. Write a program to find the second largest element in a list.
   Input:
   [18, 29, 10, 45, 35]
   Output:
   Second Largest: 35

6. Given a list, check if an element exists in the list without using the in keyword.
   Input:
   List: [7, 5, 12, 17, 9]
Element: 12
   Output:
   Element found in the list

Hard Questions (4)

1. Write a program to rotate the elements of a list by a given number of positions.
   Input:
   List: [1, 2, 3, 4, 5]
Rotate by: 2
   Output:
   Rotated List: [4, 5, 1, 2, 3]

2. Split a list into two halves and merge them after reversing one half.
   Input:
   List: [10, 20, 30, 40, 50, 60]
   Output:
   First Half: [10, 20, 30]
Reversed Second Half: [60, 50, 40]
Merged List: [10, 20, 30, 60, 50, 40]

3. Write a program to create a list of numbers from 1 to 50, and remove all multiples of 3 and 5.
   Input:
   List: [1, 2, 3, 4, ..., 50]
   Output:
   Filtered List: [1, 2, 4, 7, 8, 11, ... , 47, 49]

4. Implement matrix addition using lists of lists (2D lists).
   Input:
   Matrix A: [[1, 2], [3, 4]]
Matrix B: [[5, 6], [7, 8]]
   Output:
   Resultant Matrix: [[6, 8], [10, 12]]