Java 编程 |我们如何从给定的输入打印以下输出

Question

Input = 
Array [] a = {1,2,3,6,9,4};

output: 
Output 1  : need to print pair of number with square and squareroot
e.g. 2 , 4
     3 , 9

Output 2 : unpaired number : 1 and 6 for which we dont have any square root pair.

我正在编写下面的代码以获得第一部分的输出：

int [] sample = {9, 4 ,3 ,2, 6 , 1};

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

            int square = sample [i] * sample[i];
            double mathsq = Math.sqrt(sample[i]);

            for ( int j= 0; j< sample.length ; j ++){

                if (sample[j] == square && sample[j] != sample [i]) {
                    System.out.println(sample[i] + "==> " + sample[j]);

                }
                
            }


        }

无法找到第二种情况的登录信息..

Answer 1

所以我用下面的代码找到了解决方案，我创建了一个ArrayList来存储具有平方根和平方关系的元素，然后将其与现有数组进行比较。

下面是代码片段

public class Demo {


    public static void main(String[] args){

        int [] sample = {9, 4 ,3 ,2, 6 , 1};
        ArrayList<Integer> newarr = new ArrayList<>();


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

            int square = sample [i] * sample[i];

            for ( int j= 0; j< sample.length ; j ++){

                if (sample[j] == square && sample[j] != sample [i]) {

                    System.out.println(sample[i] + "==> " + sample[j]);

                    newarr.add(sample[i]);
                    newarr.add(square);
                }

            }

        }

        System.out.println("Unpaired : ");
        for (int i =0 ;i <sample.length ; i++) {
            if (!newarr.contains(sample[i])) {

                System.out.print(sample[i] + " , ");
            }

        }





    }
}