产生一个随机序列

//随机一个序列，来排列位置
	int start	 = 0;
	int end		 = ROW_NUM * COL_NUM;
	int quantity = ROW_NUM * COL_NUM;
	int total	 = abs(end - start);
	int sequence[ROW_NUM * COL_NUM];  //存放随机数的数组  
	int output[ROW_NUM * COL_NUM]; //最终生成的不重复一系列随机数  

	//将sequence 初始化  
	for (int i = 0; i < total; i++) {
		sequence[i] = start + i;
	}
	//随机数种子  
	timeval tm;
	gettimeofday(&tm, NULL);
	unsigned long int seed = tm.tv_sec * 1000 + tm.tv_usec / 1000;
	srand(seed);

	for (int i = 0; i < quantity; i++) {
		int num = CCRANDOM_0_1() * (end - 1);//在指定范围下产生随机数  
		output[i] = sequence[num];//将产生的随机数存储  
		sequence[num] = sequence[end - 1];//将最后个下标的值填充到随机产生的下标中  
		end--;//在指定范围 向前移  
	}