WordWrap.java

import java.util.Random;

public class Main {
    public static void main(String[] args) {
        long start = System.currentTimeMillis();
        Random r = new Random();

        for (int i = 0; i < 1000; i++) {
            for (int j = 0; j < 1000; j++) {
                if (r.nextInt(4) == 0) {
                    System.out.print("O");
                } else {
                    System.out.print("#");
                }
            }

            System.out.println("");
        }

        System.out.println(System.currentTimeMillis() - start + "ms");
    }
}

• https://stackoverflow.com/questions/21947452/why-is-printing-b-dramatically-slower-than-printing
• https://blog.gslin.org/archives/2016/09/13/6837/
• https://www.facebook.com/kewang.information/posts/1776794122596954