小O的乘积 （Java代码）

解题思路:对输入的数组排序以后 分三种情况 

注意事项:

参考代码:

public class 小O的乘积 {

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner in = new Scanner(System.in);

while (in.hasNext()) {

int len = in.nextInt();

int[] arrays = new int[len];

for (int i = 0; i < arrays.length; i++) {

arrays[i] = in.nextInt();

}

int cj = 0;

Arrays.sort(arrays);

if(arrays[0]>0 && arrays[arrays.length-1]>0) {

cj = arrays[0] * arrays[1];

}

else if(arrays[0]<0 && arrays[arrays.length-1]<0) {

cj = arrays[arrays.length-1] * arrays[arrays.length-2];

}

else {

cj = arrays[0] * arrays[arrays.length-1];

}

System.out.println(cj);

}

}

}