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• 3.7k
• 3
• 14
• 43

###Problem

Write a function that accepts a string, capitalizes the first letter of each word in the string, and returns the capitalized string. ###Examples

function('a short sentence') => 'A Short Sentence'
function('a lazy fox') => 'A Lazy Fox'
function('look, it is working!') => 'Look, It Is Working!'

###Code

I've solved the above problem using a few methods. If you'd like to review the codes and provide any change/improvement recommendations please do so, and I'd really appreciate that.

###Python

def capitalize_built_in_title(sentence: str) -> str:
 """Capitalizes the first letters and preserves the spaces"""
 return sentence.title()
def capitalize_naive_one(sentence: str) -> str:
 """Capitalizes the first letters and doesn't preserve the spaces"""
 words = sentence.split()
 for index_word, word in enumerate(words):
 word_list = split_char_by_char_list(word)
 for index_letter, letter in enumerate(word_list):
 if index_letter == 0:
 word_list[index_letter] = letter.upper()
 word = "".join(word_list)
 break
 words[index_word] = word
 return " ".join(words)
def capitalize_naive_two(sentence: str) -> str:
 """Capitalizes the first letters and doesn't preserve the spaces"""
 words = sentence.split()
 for index_word, word in enumerate(words):
 words[index_word] = word[:1].upper() + word[1:]
 return " ".join(words)
def capitalize_naive_three(sentence: str) -> str:
 """Capitalizes the first letters and preserves the spaces"""
 import regex as re
 split_on_first_letter = list(
 re.splititer(r'(?i)(?<=^|\s)([a-z])', sentence))
 for index, item in enumerate(split_on_first_letter):
 if item is not None and len(item) == 1:
 split_on_first_letter[index] = item.upper()
 return "".join(split_on_first_letter)
def split_char_by_char_re(string: str):
 import re
 return re.findall(r'.', string)
def split_char_by_char_regex(string: str):
 import regex as re
 return re.findall(r'.', string)
def split_char_by_char_list(string: str):
 return list(string)
if __name__ == '__main__':
 # ---------------------------- TEST ---------------------------
 DIVIDER_DASH_LINE = '-' * 50
 GREEN_APPLE = '\U0001F34F'
 RED_APPLE = '\U0001F34E'
 test_sentences = ['hey there, how was your day?',
 ' good day! ', ' it waS GreaT!']
 capitalized_sentences = [
 'Hey There, How Was Your Day?', ' Good Day! ', ' It WaS GreaT!']
 # ---------------------- DONT REPEAT YOURSELF -------------------------------
 for index, sentence in enumerate(test_sentences):
 print(DIVIDER_DASH_LINE)
 if capitalized_sentences[index] == capitalize_built_in_title(sentence):
 print(f'{GREEN_APPLE} "{sentence}" => "{capitalize_built_in_title(sentence)}"')
 else:
 print(f'{RED_APPLE} "{sentence}" => "{capitalize_built_in_title(sentence)}"')
 if capitalized_sentences[index] == capitalize_naive_one(sentence):
 print(f'{GREEN_APPLE} "{sentence}" => "{capitalize_naive_one(sentence)}"')
 else:
 print(f'{RED_APPLE} "{sentence}" => "{capitalize_naive_one(sentence)}"')
 if capitalized_sentences[index] == capitalize_naive_two(sentence):
 print(f'{GREEN_APPLE} "{sentence}" => "{capitalize_naive_two(sentence)}"')
 else:
 print(f'{RED_APPLE} "{sentence}" => "{capitalize_naive_two(sentence)}"')
 if capitalized_sentences[index] == capitalize_naive_three(sentence):
 print(f'{GREEN_APPLE} "{sentence}" => "{capitalize_naive_three(sentence)}"')
 else:
 print(f'{RED_APPLE} "{sentence}" => "{capitalize_naive_three(sentence)}"')

###Output

--------------------------------------------------
🍏 "hey there, how was your day?" => "Hey There, How Was Your Day?"
🍎 "hey there, how was your day?" => "Hey There, How Was Your Day?"
🍎 "hey there, how was your day?" => "Hey There, How Was Your Day?"
🍏 "hey there, how was your day?" => "Hey There, How Was Your Day?"
--------------------------------------------------
🍏 " good day! " => " Good Day! "
🍎 " good day! " => "Good Day!"
🍎 " good day! " => "Good Day!"
🍏 " good day! " => " Good Day! "
--------------------------------------------------
🍎 " it waS GreaT!" => " It Was Great!"
🍎 " it waS GreaT!" => "It WaS GreaT!"
🍎 " it waS GreaT!" => "It WaS GreaT!"
🍏 " it waS GreaT!" => " It WaS GreaT!"

// --- Problem
// Write a function that accepts a string. The function should
// capitalize the first letter of each word in the string then
// return the capitalized string.
// --- Examples
// function('a short sentence') => 'A Short Sentence'
// function('a lazy fox') => 'A Lazy Fox'
// function('look, it is working!') => 'Look, It Is Working!'
function capitalize_naive_one(sentence) {
 words = [];
 for (let word of sentence.split(' ')) {
 if (word != '') {
 word = (word[0].toUpperCase() + word.slice(1));
 }
 words.push(word);
 }
 return words.join(' ');
}
function capitalize_naive_two(sentence) {
 capitalized_sentence = sentence[0].toUpperCase();
 for (let i = 1; i < sentence.length; i++) {
 if (sentence[i - 1] === ' ') {
 capitalized_sentence += sentence[i].toUpperCase();
 } else {
 capitalized_sentence += sentence[i];
 }
 }
 return capitalized_sentence;
}
test_sentences = ['hey there, how was your day?', ' good day! ', ' it waS GreaT!'];
capitalized_sentences = ['Hey There, How Was Your Day?', ' Good Day! ', ' It WaS GreaT!'];
count = 0;
for (let sentence of test_sentences) {
 if (capitalized_sentences[count] === capitalize_naive_one(sentence) && capitalized_sentences[count] === capitalize_naive_two(sentence)) {
 console.log('🍏 "'.concat(sentence, '" => "', capitalized_sentences[count], '"'));
 }
 count++;
}