w3resource

JavaScript: Sort the characters of a string Alphabetically

JavaScript fundamental (ES6 Syntax): Exercise-143 with Solution

Write a JavaScript program to sort the characters of a string Alphabetically.

  • Use the spread operator (...), Array.prototype.sort() and String.prototype.localeCompare() to sort the characters in str.
  • Recombine using String.prototype.join('').

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const sortCharactersInString = str => [...str].sort((a, b) => a.localeCompare(b)).join('');

console.log(sortCharactersInString('cabbage'));

console.log(sortCharactersInString('a7fs23l1n4o6x'));

Sample Output:

aabbceg
123467aflnosx

Pictorial Presentation:

JavaScript Fundamental: Sort the characters of a string Alphabetically.

Flowchart:

flowchart: Sort the characters of a string Alphabetically

Live Demo:

See the Pen javascript-basic-exercise-143-1 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to get the lowest index at which value should be inserted into array in order to maintain its sort order.
Next: Write a JavaScript program to get an array of elements that appear in both arrays.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



JavaScript: Tips of the Day

How to remove a specific item from an array?

Find the index of the array element you want to remove using indexOf, and then remove that index with splice.

The splice() method changes the contents of an array by removing existing elements and/or adding new elements.

const array = [2, 5, 9];

console.log(array);

const index = array.indexOf(5);
if (index > -1) {
  array.splice(index, 1);
}

// array = [2, 9]
console.log(array);

The second parameter of splice is the number of elements to remove. Note that splice modifies the array in place and returns a new array containing the elements that have been removed.

For the reason of completeness, here are functions. The first function removes only a single occurrence (i.e. removing the first match of 5 from [2,5,9,1,5,8,5]), while the second function removes all occurrences:

function removeItemOnce(arr, value) {
  var index = arr.indexOf(value);
  if (index > -1) {
    arr.splice(index, 1);
  }
  return arr;
}

function removeItemAll(arr, value) {
  var i = 0;
  while (i < arr.length) {
    if (arr[i] === value) {
      arr.splice(i, 1);
    } else {
      ++i;
    }
  }
  return arr;
}
//Usage
console.log(removeItemOnce([2,5,9,1,5,8,5], 5))
console.log(removeItemAll([2,5,9,1,5,8,5], 5))

Ref: https://bit.ly/2N9nKRp