public class Test { /** * (int)(rmd*(max - min + 1) + min) ; [min,max] */ public static void main(String[] args) { new Thread(new Runnable(){ @Override public void run() { while(true) { try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } generateNum(); //generateZIMU(); } } }).start(); } // 生成 [1,12] private static void generateNum() { double rmd = Math.random(); int num = (int)(rmd*(12-1+1) + 1); System.out.println(num); } // 生成24个小写字母 private static void generateZIMU() { double rmd = Math.random(); char num = (char)(rmd*('z'-'a'+1) + 'a') ; System.out.println(num); } }
javase_生成指定区间的任意整数_字母
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