JavaScript: Returns a passed string with letters in alphabetical order

JavaScript Function: Exercise-4 with Solution

Write a JavaScript function that returns a string that has letters in alphabetical order.
Example string: 'webmaster'
Expected Output: 'abeemrstw'

Note: Assume punctuation and numbers symbols are not included in the passed string..

Pictorial Presentation:

Sample Solution-1:

JavaScript Code:

function alphabet_order(str)
  {
return str.split('').sort().join('');
  }
console.log(alphabet_order("webmaster"));

Sample Output:

abeemrstw

Explanation:

Flowchart:

Live Demo:

See the Pen JavaScript -Returns a passed string with letters in alphabetical order-function-ex- 4 by w3resource (@w3resource) on CodePen.

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Sample Solution-2:

JavaScript Code:

function alphabet_order(str) {
  const lettersOnly = str.replace(/[^a-zA-Z]/g, '');
  const sorted = lettersOnly.split('').sort().join('');
  return sorted;
}
const str = 'web$mast@er';
const result = alphabet_order(str);
console.log(result); 

Sample Output:

abeemrstw

Explanation:
Using a regular expression, you can remove non-letter characters before sorting letters. The above function uses the replace() method with a regular expression to remove any characters that are not letters before sorting the remaining letters. The regular expression /[^a-zA-Z]/g matches any character that is not a letter (that is, any character that is not in the range a-z or A-Z), with the g flag making the regular expression match all instances of non-letter characters.

Flowchart:

Live Demo:

See the Pen javascript-function-exercise-4-1 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

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