Print the Index - 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.

• Can the list be empty?
  • Yes. If the list is empty, nothing should print.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Loop through a list, print out the index of each element.

I-mplement

	def print_indices(lst):
		for index in range(len(lst)):
			print(index)

• Q: What if I used a counter variable?
• A: While this solution will also work, the extra variable takes up unnecessary space in memory. Using range(len(LIST)) is the more efficient way to solve the problem in Python.