random


python - Shuffling a list of objects

random.shuffle should work. Here's an example, where the objects are lists: from random import shuffle x = [[i] for i in range(10)] shuffle(x) # print(x) gives [[9], [2], [7], [0], [4], [5], [3],... Read More


How to make a random color with Swift

You're going to need a function to produce random CGFloats in the range 0 to 1: extension CGFloat { static func random() -> CGFloat { return CGFloat(arc4random()) / CGFloat(UInt32.max)... Read More


How does hyperledger fabric handle random number generation?

Hyperledger fabric works in the order of Execute Order and Validate.So Execution steps is done in Endorser so execution is done with endorsement policy which is defined and it also removes randomizat... Read More


c++ - Random number generation in C++11: how to generate, how does it work?

The question is way too broad for a complete answer, but let me cherry-pick a couple of interesting points: Why "equally likely" Suppose you have a simple random number generator that generate the nu... Read More


random - JavaScript expression to generate a 5-digit number in every case

What about: Math.floor(Math.random()*90000) + 10000;... Read More


Pick random property from a Javascript object

The chosen answer will work well. However, this answer will run faster: var randomProperty = function (obj) { var keys = Object.keys(obj); return obj[keys[ keys.length * Math.random() << 0]];... Read More


python - Efficiently generate a 16-character, alphanumeric string

As none of the answers provide you with a random string consisting of characters 0-9, a-z, A-Z: Here is a working solution which will give you one of approx. 62^16 = 4.76724 e+28 keys: import random,... Read More


c - Why does rand() + rand() produce negative numbers?

rand() is defined to return an integer between 0 and RAND_MAX. rand() + rand() could overflow. What you observe is likely a result of undefined behaviour caused by integer overflow.... Read More


How do you generate a random double uniformly distributed between 0 and 1 from C++?

An old school solution like: double X=((double)rand()/(double)RAND_MAX); Should meet all your criteria (portable, standard and fast). obviously the random number generated has to be seeded the standa... Read More


java - Generate random date of birth

import java.util.GregorianCalendar; public class RandomDateOfBirth { public static void main(String[] args) { GregorianCalendar gc = new GregorianCalendar(); int year = randBe... Read More