TypeScript Sorting Array - GeeksforGeeks (2024)

Last Updated : 02 Jan, 2024

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To sort an array in TypeScript we could use Array.sort() function. TheArray.sort()is an inbuilt TypeScript function that is used to sort the elements of an array.

Syntax:

array.sort(compareFunction)

Below are the places where we could use the sort() function:

Table of Content

Sorting array of numbers
Sorting Array of Strings
Sorting Array of Objects

Sorting Array of Numbers

Example: In this example, we have an array of numbers, and we use the sort method with a custom comparison function to sort the array in ascending order.

Javascript

const numbers: number[] = [4, 2, 7, 1, 9, 5];

numbers.sort((a, b) => a - b);

console.log("Sorted Numbers: ", numbers);

Sorting Array of Strings

Example: In this example, we have an array of strings, and we use the sort method to sort the strings in default lexicographic order.

Javascript

const fruits: string[] = ["Apple", "Orange", "Banana", "Mango"];

Sorting Array of Objects

Example: In this example, we have an array of people with name and age properties. We use the sort method with a custom comparison function to sort the array based on the age property in ascending order.

Javascript

interface Person {

name: string;

age: number;

}

const people: Person[] = [

{ name: "Alice", age: 25 },

{ name: "Bob", age: 30 },

{ name: "Charlie", age: 22 },

{ name: "David", age: 28 }

];

people.sort((a, b) => a.age - b.age);

console.log("Sorted People by Age: ", people);

Output:

Sorted People by Age: [ 
 { name: 'Charlie', age: 22 }, 
 { name: 'Alice', age: 25 }, 
 { name: 'David', age: 28 }, 
 { name: 'Bob', age: 30 }
 ]

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