Total Sum - codepath/compsci_guides GitHub Wiki

Unit 1 Session 1 (Click for link to problem statements)

U-nderstand

Understand what the interviewer is asking for by using test cases and questions about the problem.

• Will stop always be a positive integer?
  • Yes.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Create a function that takes a parameter stop and returns the sum of the numbers 1 to stop.

1) Create a variable to store the total sum
2) Loop through the numbers 1 to "stop", and add each to the sum variable
3) Return the sum variable

⚠️ Common Mistakes

• Make sure your loop includes the final number!

I-mplement

def sum_positive_range(stop):
	total = 0
	for num in range(1, stop + 1):
		total += num
	return total