Sort a string in JavaScript

In this article, we will try to understand how to sort strings of characters using several different approaches available using JavaScript. Let us see how to create a string using the syntax provided by JavaScript and thereafter we will see a short example that will help us to understand this syntax clearly.

Following are some of the approaches which will help us to do our task:

Approach 1: Using the sort() function

• In this approach, we will use the split() method in order to convert our string into an array first.
• We will apply the sort() method on that converted array in order to sort the characters alphabetically.
• After sorting the characters alphabetically, we will convert our array back into the string itself using the method called join().

Example: In this example, we are sorting the given string by the use of the sort() function.

Javascript

let sortString = (stringg) => {
    return stringg.split("").sort().join("");
};

console.log("Sorted String: ");
console.log(sortString("qwertyuiop"));

Output

Sorted String: 
eiopqrtuwy

Approach 2: Using sort(), localCompare() and join() methods

• We will convert a string into an array itself.
• We will use an array for the same, and then we will apply the sort() method which will take two parameters that represent two characters.
• The localCompare() method will compare the two characters and it will be placed first whichever comes first.
• We will apply the join() method which will join all the characters and make the array return to the string itself.

Example: In this example, we are sorting the given string by the use of the sort(), localCompare(), and join() functions.

Javascript

let sortString = (str) => {
    return [...str].sort((a, b) =>
    a.localeCompare(b)).join("");
}

console.log("Sorted String: ");
console.log(sortString("qwertyuiop"));

Output

Sorted String: 
eiopqrtuwy