用Python，C++，Java画圣诞树

Posted 2023-02-22 梦西空

今天是圣诞节，我用这三种普及度比较广的语言来打印简单的圣诞树，祝大家圣诞节快乐！

Python

i=int(4)
j=int(1)
while i>=0:
    t=int(0)
    while t<i:
        print(" ",end='')
        t=t+1
    t=int(0)
    while t<j:
        print("*",end='')
        t=t+1
    i=i-1
    j=j+2
    print()
t=int(0)
while t<4:
    print(" ",end='')
    t=t+1
print("*",end='')    

C++

#include<iostream>
using namespace std;
int main()

    int i=4;
    int j=1;
    while (i>=0)
    
        for (int f = 0;f < i; f++)
        
            cout<<" ";
        
        for (int f = 0; f < j; f++)
        
            cout<<"$";
        
        cout<<endl;
        i--;
        j+=2;
    
    for (int i = 0; i < 4; i++)
    
        cout<<" ";
    
    cout<<"$";
    
 // namespace name

Java

/**2020年12月25日 上午8:40:19
 * @author Yang Jiabin 
 * @describe 画圣诞树
 * 
 */
public class ChristmasTree 

	private int height=5;//圣诞树的高
	private char element='$';//圣诞树组成元素
	private int root=1;//树根高
	
	public static void main(String[] args) 
		
		ChristmasTree christmasTree=new ChristmasTree();
		christmasTree.drawTree();
		
	

	/**构造方法
	 * @param height
	 * @param element
	 */
	public ChristmasTree(int height, char element) 
		super();
		this.height = height;
		this.element = element;
	

	/**构造方法
	 * 
	 */
	public ChristmasTree() 
		super();
	

	//return height 访问器
	public int getHeight() 
		return height;
	

	//@param height 修改器
	public void setHeight(int height) 
		this.height = height;
	

	//return element 访问器
	public char getElement() 
		return element;
	

	//@param element 修改器
	public void setElement(char element) 
		this.element = element;
	

	//画一棵圣诞树
	public void drawTree() 
		int len=height-1;
		int h=1;
		while(len>=0) 
			for(int i=0;i<len;i++) 
				System.out.print(" ");
			
			for(int i=0;i<h;i++) 
				System.out.print(element);
			
			System.out.println();
			len--;
			h+=2;
		
		for(int i=1;i<=root;i++) 
			for(int j=1;j<height;j++) 
				System.out.print(" ");
			
			System.out.println(element);