Reverse String - codepath/compsci_guides GitHub Wiki

Unit 3 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 input string ever be empty?
  • Yes, your code should allow for this.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Slice the entire string in reverse order.

1) Return a slicing of the entire input string, but with a negated step parameter

I-mplement

def reverse_string(myStr):
	return myStr[::-1]

# OR

def reverse_string(myStr):
	reversed_str = ''
	for char in myStr:
		reversed_str = char + reversed_str
	return reversed_str