Reverse Sentence - 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.

• What is there is only one word in the sentence?
  • The function should return the original string.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Reverse a list of the input words and return the joined sentence.

1) First, split the sentence into a list of words
2) Slice the entire list with a negated step parameter
3) Join the list of words back into a sentence
4) Return the reversed sentence

I-mplement

def reverse_sentence(sentence):
    words = sentence.split(' ')
    reversed_words = words[::-1]
    reversed_sentence = ' '.join(reversed_words)
    return reversed_sentence