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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 fumction``main() {``   ` `  ``// Creating List``  ``List<``int``> 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 function``main() {``   ` `  ``// 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 function``main() {``   ` `  ``// 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 function``main() {``   ` `  ``// Creating list of string``  ``List<``int``> 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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