Task 3: Range Function Practice

Objective: Use Python’s range() to control loops.

Instructions:

1. Write a Python function range_sum(n) that:

• Uses a for loop and range() to add numbers from 0 up to n-1.

2. Modify the function to:

• Use a while loop instead of a for loop.

• Use a bottom-check loop (while True + break) structure to achieve the same.

Example Input:

n = 5

Expected Output:

Sum = 10

Task 1: Looping and Accumulator Variable

Objective: Practice loop control and accumulator patterns using Python.

Instructions:

1. Write a Python function sum_list_elements(lst) that:

• Takes a list of integers as input.

• Returns the sum of all elements using a for loop and an accumulator variable.

2. Extend the function to count how many elements in the list are greater than 10 using a separate counter.

Example Input:

[3, 11, 15, 7, 2, 18]

Expected Output:

Sum: 56

Count of numbers > 10: 3

Task 2: Swapping Two Variables (Multiple Methods)

Objective: Practice variable swapping using different techniques.

Instructions:

1. Write a Python function swap_with_temp(a, b) that:

• Swaps two variables using a temporary variable.

2. Write another function swap_without_temp(a, b) that:

• Swaps two variables using arithmetic operations (addition and subtraction).

3. (Optional Advanced) Try swapping using a Python tuple assignment in a single line.

Example Input:

a = 100, b = 200

Expected Output for all methods:

a = 200, b = 100

What is the output of this snippet?

Python Code

a = 0  

for i in [1, 2, 3]:  

    a += 1  

print(a)