how to get a random num within a range in java code example

Example 1: how to return a random number from a list in dart

import "dart:math";

void main() {
 var list = ['a','b','c','d'];
    var element = getRandomElement(list);
    print(element);  
}


T getRandomElement<T>(List<T> list) {
    final random = new Random();
    var i = random.nextInt(list.length);
    return list[i];
}

Example 2: javascript get random number in range

function getRandomNumberBetween(min,max){
    return Math.floor(Math.random()*(max-min+1)+min);
}

//usage example: getRandomNumberBetween(20,400);