生成六位随机数不重复,随机6个数字不能重复

随机生成6位数字，且6个数字不重复 public static int random(){ int[] array = {0,1,2,3,4,5,6,7,8,9}; Random rand = new Random(); for (int i = 10; i > 1; i--) { int index = rand.nextInt(i); int tmp = array[index]; array[index] = array[i - 1]; array[i - 1] = tmp; } int result = 0; for(int i = 0; i < 6; i++) result = result * 10 + array[i]; return result; }