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Dart – Sort a List
• Last Updated : 15 Jul, 2020

In Dart programming, the List data type is similar to arrays in other programming languages. A list is used to represent a collection of objects. It is an ordered group of objects. The core libraries in Dart are responsible for the existence of List class, its creation, and manipulation. Sorting of the list depends on the type of list we are sorting i.e. if we are sorting integer list then we can use simple sort function whereas if it is a string list then we use compareTo to sort the list.

### Sorting an Integer List

An integer list can be sort by the simple sort function.

Example: Sorting an integer list.

## Dart

 // Main fumctionmain() {      // Creating List  List geeksforgeeks = [13, 2, -11, 142, -389, 32, 3032, 0];      // Sorting List  geeksforgeeks.sort();      // Printing Sorted List  print(geeksforgeeks); }

Output:

[-389, -11, 0, 2, 13, 32, 142, 3032]

### Sorting a String List

The string is sorted by comparing the length in the sort function.

Example: Sorting a string list.

## Dart

 // Main functionmain() {      // Creating list of string  List geeksforgeeks = ['one', 'two', 'three', 'four'];      // Sorting string by comparing the length  geeksforgeeks.sort((a, b) => a.length.compareTo(b.length));      // Printing the list  print(geeksforgeeks);}

Output:

[one, two, four, three]

If we use sort without comparing the length then:

Example: Sorting a string list without comparing the length.

## Dart

 // Main functionmain() {      // Creating list of string  List geeksforgeeks = ['one', 'two', 'three', 'four'];      // Sorting string without   // comparing the length  geeksforgeeks.sort();      // Printing the list  print(geeksforgeeks);}

Output:

[four, one, three, two]

Example: Using the cascades method while sorting the list.

## Dart

 // Main functionmain() {      // Creating list of string  List geeksforgeeks = [13, 2, -11, 142, -389, 0];      // Sorting string and Printing the list  print(geeksforgeeks..sort());}

Output:

[-389, -11, 0, 2, 13, 142]
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