Negative Numbers - 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 the list only contain numbers?
  • Yes.
• Is there always a negative number in the list?
  • No. If there are no negative numbers, the function should not print anything.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Create a function that prints all negative numbers in the list.

1) Loop through each number in the list
2) If the current number is less than zero, print it out

I-mplement

def print_negatives(lst):
	for number in lst:
		if number < 0:
			print(number)
	
print_negatives([1,-2, 4, 3, -5]) 
# Output: 
# -2 
# -5

print_negatives([1,2,3,4,5]) 
# No output