java - 在java中寻找一种方法在每次迭代时将(x，y)输入到数组

Question

我正在寻找在java中数组调用的每个实例上添加一个点(x，y)这就是我想做的 声明一个数组，例如

int [] weight = new int[100];

我希望在下一步中增加值(value)

 weight.add(3,4);
 weight.add(5,6);

我正在寻找的想法是当我进行这样的迭代时

for(int i =0;i< weight.length;i++)
     print "Weight"+i+ "has"+ weight[i] 

它应该打印

       Weight 0 has (3,4);

Answer 1

我会为每个点创建一个类，其中包含 x 和 y 坐标...使用类似的代码...

class Point{
    public Point(int x, int y){
        this.x = x;
        this.y = y;
    }
}

然后，不要创建一个整数数组，而是创建一个点数组...类似...

//create array of points size 100
Point [] weight = new Point[100];

//add point to array
int i = 0; //set this to the index you want the point at
weight[i] = new Point(0, 0); //add whatever point you want to index i

//then you can loop through your array of points and print them out
for (int i = 0; i < weight.length; i++){

    System.out.println("Weight " + i + " has (" + weight[i].x + "," + weight[i].y + ");\n"
}

在我看来，将 x 和 y 坐标抽象为 Point 类是更好的设计。它将帮助您在编程时更好地记住数据。此外，您可以向点类添加方法，例如 double distance(Point other) 来返回两点之间的距离...