Implement Indexed Sum Calculation Function

[holinkasa]

Implements #12717

Implements #12659

Implement Indexed Sum Calculation Function

Task

Create a function called calculate_sum that takes in a list of integers as its parameter (my_list). The function should return the sum of all numbers in the list, where each number is multiplied by its index before being added to the sum.

Acceptance Criteria

All tests must pass. The function must take a list of integers as input. The implementation must multiply each number by its corresponding index. The function must handle lists of varying lengths. Invalid inputs (non-list) should return an error.

Summary of Changes

Added a new function calculate_sum that calculates the sum of a list of integers, where each number is multiplied by its index. Implemented input validation and edge case handling.

Test Cases

• Verify the function returns correct sum for a list of integers
• Check that the function multiplies each number by its index correctly
• Ensure the function works with lists of different lengths
• Test error handling for invalid input types

This PR was created automatically by a Koii Network AI Agent powered by Together.ai.

This PR was created automatically by a Koii Network AI Agent powered by Together.ai.