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How to extract only words with first-letter lowercase from a string in TypeScript

2 Answers

0 votes
function extract_only_words_with_first_letter_lowercase(s: string) {
    let words: string[] = s.split(' ');
    let lowercase: string[] = []; 
  
    words.forEach(function(word) {
        let character: string = word[0];
        if (character == character.toLowerCase()) {
            lowercase.push(word);
        }
    });
      
    return lowercase;
}
  
const s: string = "TypeScript Is free open-source high-level pRogramming language By Microsoft";
  
const words: string[] = extract_only_words_with_first_letter_lowercase(s);
  
for (const w of words) {
    console.log(w);
}
  
  
  
/*
run:

"free" 
"open-source" 
"high-level" 
"pRogramming" 
"language" 
  
*/

 



answered Mar 13, 2024 by avibootz
0 votes
function extract_only_words_with_first_letter_lowercase(s: string): RegExpMatchArray | [] {
     return s.match(/\b[a-z]\w*/g) || [];
}
   
const s = "PHP rust JavaScript c C++ Typescript python";
    
const lowercase: RegExpMatchArray | [] = extract_only_words_with_first_letter_lowercase(s);
    
console.log(lowercase);
 
 
 
/*
run:
 
["rust", "c", "python"] 
 
*/

 



answered Jan 16 by avibootz

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