How to get a random number from range in dart?

Question

How does one get a random number within a range similar to c# Random.Next(int min, int max);

Answer 1

Range can be found with a simple formula as follows

Random rnd;
int min = 5;
int max = 10;
rnd = new Random();
r = min + rnd.nextInt(max - min);
print("$r is in the range of $min and $max");

Answer 2

import 'dart:math';

final _random = new Random();

/**
 * Generates a positive random integer uniformly distributed on the range
 * from [min], inclusive, to [max], exclusive.
 */
int next(int min, int max) => min + _random.nextInt(max - min);

Answer 3

import 'dart:math';

Random rnd = new Random();
// Define min and max value
int min = 1, max = 10;
//Getting range
int num = min + rnd.nextInt(max - min);
print("$num is in the range of $min and $max");

Answer 4

A simpler way of doing this is to use the nextInt method within Random:

// Random 50 to 100:
int min = 50;
int max = 100;
int selection = min + (Random(1).nextInt(max-min));

https://api.dartlang.org/stable/2.0.0/dart-math/Random-class.html

Answer 5

This is really late, but this for anyone who still has the question.

The most easiest way to get a random number between a min and a max is the following :

import 'dart:math';

int max = 10;

int randomNumber = Random().nextInt(max) + 1;

The math module in dart has a function called nextInt. This will return an integer from 0 (including 0 ) to max - 1 ( exluding max ). I want a number 1 to 10, hence I add 1 to the nextInt result.

Answer 6

You can achieve it via Random class object random.nextInt(max) . The nextInt() method requires a max limit. The random number starts from 0 and the max limit itself is exclusive.

import 'dart:math';
Random random = new Random();
int randomNumber = random.nextInt(100); // from 0 upto 99 included

If you want to add the min limit, add the min limit to the result

int randomNumber = random.nextInt(90) + 10; // from 10 upto 99 included