测试数据不止一组，每组测试数据： １）先输入无序序列的整数个数n；(n不超过1000000) ２）然后连续输入n个整数； 若n的值输入为０值，则输入结束 -More than one set of test data, each set of test data: 1) the first input of an integer number n of the unordered sequence (n does not exceed 1000000) 2)