Java Data Type - 如何生成一个范围内的随机整数

import java.util.Arrays;

public class Main {
  public static void main(String[] args) {
    int[] randomArray = randomArray(5);
    System.out.println(Arrays.toString(randomArray));
  }
  //generate random integer within a range
  public static int randomInt(int low, int high) {
    return (int) (Math.random() * (high - low)) + low;
  }

  public static int[] randomArray(int n) {
    int[] a = new int[n];
    for (int i = 0; i < a.length; i++) {
      a[i] = randomInt(0, 100);
    }
    return a;
  }
}