Question

用户输入要创建的正方形数。用户还通过输入尺寸来指定每个正方形的尺寸。然后，程序在屏幕上以用户指定的大小打印出带有星星的正方形。正方形应按顺序绘制。

在下面的示例中，打印出3个正方形，大小分别为5x5、3x3和7x7。

输出应如下所示：

输入形状数量：3 输入形状1：5的大小输入形状2的大小：3 输入形状3的大小：7

我的第一次尝试可以，但是在输入一定数量的正方形后立即打印正方形。像这样-

import java.util.Scanner;

public class Main3 {

static  Scanner scanner = new Scanner(System.in);
static int numOfShapes;
static String[] shape;
static int shapeSize;
static int nrOfRows;
static int nrOfCols;

public static void main(String[] args) {


    System.out.print("Enter the number of shapes:");
    numOfShapes = scanner.nextInt();
    scanner.nextLine();

    getShape();

}
public static void getShape(){

    for(int i = 0; i < numOfShapes; i++){
        System.out.print("Enter size of shape " + (i + 1) + "\n");
        shapeSize = scanner.nextInt();
        scanner.nextLine();
        shape  = new String[shapeSize];


        nrOfRows = shapeSize;
        nrOfCols = shapeSize;

        for (int row = 0; row < nrOfRows; row++) {

            for (int col = 0; col < nrOfCols; col++) {
                shape[i] = "*";
                System.out.printf("%s ", shape[i]);
            }
            System.out.println();
        }
    }
}

}

我的第二次尝试看起来像这样，但似乎无法正常工作。我不知道为什么。

导入java.util.Scanner;

公共类主要{

static int numOfShapes;
static int sizeOfShape;
static String[] arrayToPrint;
static Scanner scanner = new Scanner(System.in);
static int nrOfRows;
static int nrOfCols;

public static void main(String[] args) {



    System.out.print("Enter the number of shapes to print:");
    numOfShapes = scanner.nextInt();

    for (int i = 0; i < numOfShapes; i++) {
        System.out.println("Enter the size of shape " + (i + 1));
        sizeOfShape = scanner.nextInt();
        scanner.nextLine();
        arrayToPrint = new String[sizeOfShape];
        //arrayToPrint[i] = Integer.toString(sizeOfShape);
    }

    nrOfRows = sizeOfShape;
    nrOfCols = sizeOfShape;

    for (int i = 0; i < numOfShapes; i++) {
        for (int row = 0; row < nrOfRows; row++) {
            for (int col = 0; col < nrOfCols; col++) {
                arrayToPrint[i] = "*";
                System.out.printf("%s ", arrayToPrint[i]);
                System.out.println();
            }
            System.out.println();
        }
        //System.out.println();
    }
}

}

在屏幕上以某种图案打印正方形。使用嵌套的for循环

0 个答案: