Below Threshold - codepath/compsci_guides GitHub Wiki

Unit 1 Session 2 (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 the list always contain only numbers?
  • Yes.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Loop through a list of numbers, and count how many numbers in the list are less than a given threshold.

1) Create a function with parameters for the list and threshold
2) Initialize a counter variable to zero
3) Loop through the input list
  a) If the element is less than the threshold, add 1 to the counter
4) Return the counter

I-mplement

def count_less_than(numbers, threshold):
	count = 0
	for num in numbers:
		if num < threshold:
			count += 1
	return count