int[] shuffle(int[] array){
if(array == null) return null;
Random ran = new Random();
for(int i=0;i<array.length;i++){
int toIndex = ran.nextInt(i+1);
int temp = array[i];
array[i] = array[toIndex];
array[toIndex] = temp;
}
return array;
}
转载于:https://my.oschina.net/lldy/blog/137580