RandUtils.java

package cn.liutils.util.generic;

import java.util.Random;

public class RandUtils {

    static final Random RNG = new Random();
    
    public static double ranged(double from, double to) {
        return from + RNG.nextDouble() * (to - from);
    }
    
    public static float rangef(float from, float to) {
        return from + RNG.nextFloat() * (to - from);
    }
    
    public static int rangei(int from, int to) {
        return from + RNG.nextInt(to - from);
    }
    
    public static float nextFloat() {
        return RNG.nextFloat();
    }
    
    public static double nextDouble() {
        return RNG.nextDouble();
    }
    
    public static int nextInt(int n) {
        return RNG.nextInt(n);
    }
    
}