Share programming ideas and techniques for implementing love patterns using Java code

Sharing of programming ideas and techniques for realizing love patterns using Java code

In this article, I will share with you how to use Java programming language to realize a beautiful heart pattern. This pattern can be accomplished using basic graph drawing methods and some algorithmic thinking.

The following is a code example to implement this love pattern:

import java.util.Scanner;

public class HeartPattern {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入图案的大小（1-10）：");
        int size = scanner.nextInt();
        scanner.close();

        if (size < 1 || size > 10) {
            System.out.println("输入的大小超过了范围！");
            return;
        }

        // 计算图案的宽度和高度
        int width = size * 4 - 1;
        int height = size * 2 - 1;

        // 创建一个二维数组来表示图案的矩阵
        char[][] pattern = new char[height][width];

        // 初始化矩阵中的所有元素为' '，表示空格
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                pattern[i][j] = ' ';
            }
        }

        // 使用算法思维来绘制爱心图案
        int x, y;
        double distance;
        for (double i = 0; i < 2 * size; i += 0.05) {
            double angle = i;
            // 通过参数方程计算出心形曲线上每个点的坐标
            x = (int) (size * (16 * Math.pow(Math.sin(angle), 3)));
            y = (int) (-size * (13 * Math.cos(angle) - 5 * Math.cos(2 * angle) - 2 * Math.cos(3 * angle) - Math.cos(4 * angle)));

            // 将曲线上的每个点填充到矩阵中
            distance = Math.sqrt(Math.pow((x - size * 2), 2) + Math.pow((y - size), 2));
            if (distance < size + 0.5) {
                pattern[size + y][size * 2 + x] = '*';
            }
        }

        // 打印爱心图案
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                System.out.print(pattern[i][j]);
            }
            System.out.println();
        }
    }
}

This code implements the generation and printing functions of a love pattern. By entering a size parameter, the program calculates the pattern's width and height based on that parameter, and uses a two-dimensional character array to represent the pattern's matrix.

Next, the program uses parametric equations to calculate the coordinates of each point on the cardioid curve and fills the points into a matrix. Finally, the program prints out the matrix to form a beautiful heart pattern.

Through this sample code, we can see the basic ideas and techniques for implementing pattern drawing in Java programming. Through computation and algorithmic thinking, we can print patterns of various shapes on the console. This not only improves our programming skills, but also adds some fun and beauty to our programs.

I hope this article will be helpful to everyone in understanding and learning the Java programming language, and it will also inspire everyone to think about creativity and art. Let's enjoy programming together!

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