First Item - 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.

• Do I need to modify the provided function?
  • No.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Create a function to safely get the first element of a list.

1) Create a new function with a parameter for the list
2) If the list is not empty, return the first item
3) Otherwise, return None

I-mplement

def get_first(lst):
	if lst:
		return lst[0]
	return None