Answers for "java random number math.random"

90

java random number

import java.util.Random;

Random rand = new Random();

// Obtain a number between [0 - 49].
int n = rand.nextInt(50);

// Add 1 to the result to get a number from the required range
// (i.e., [1 - 50]).
n += 1;
Posted by: Guest on March-09-2020
0

java math random

// Math.random() returns a random number between 0.0-0.99.
double rnd = Math.random();

// rnd1 is an integer in the range 0-9 (including 9).
int rnd1 = (int)(Math.random()*10);

// rnd2 is in the range 1-10 (including 10). The parentheses are necessary!
int rnd2 = (int)(Math.random()*10) + 1;

// rnd3 is in the range 5-10 (including 10). The range is 10-5+1 = 6.
int rnd3 = (int)(Math.random()*6) + 5;

// rnd4 is in the range -10 up to 9 (including 9). The range is doubled (9 - -10 + 1 = 20) and the minimum is -10.
int rnd4 = (int)(Math.random()*20) - 10;
Posted by: Guest on July-09-2021

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