Java打印实心和空心菱形

╰半夏微凉° 2021-09-28 10:52 430阅读 0赞

## Java打印实心和空心菱形 ##

public static void main(String[] args) {
    		System.out.println("请输入需要打印的菱形行数:");
    		int hangshu = new Scanner(System.in).nextInt();
    		int yiban = hangshu / 2 + 1;
    		int yibanduo = hangshu / 2;
    		System.out.println("空心菱形：");
    		for (int k = 1; k <= yiban; k++) {
    			for (int i = 1; i <= (yiban - k); i++) {
    				System.out.print(" ");
    			}
    			System.out.print("*");
    			for (int i = 1; i <= ((k - 2) * 2 + 1); i++) {
    				System.out.print(" ");
    			}
    
    			if (k != 1) {
    				System.out.print("*");
    			}
    			System.out.println();
    		}
    		for (int k = yibanduo; k >= 1; k--) {
    			for (int i = 1; i <= (yiban - k); i++) {
    				System.out.print(" ");
    			}
    			System.out.print("*");
    			for (int i = 1; i <= ((k - 2) * 2 + 1); i++) {
    				System.out.print(" ");
    			}
    			if (k != 1) {
    				System.out.print("*");
    			}
    			System.out.println();
    		}
    		
    		System.out.println("实心菱形：");
    		for (int i = 1; i <= hangshu; i++) {
    			if (i <= hangshu / 2 + 1) {
    				for (int k = 1; k <= hangshu / 2 + 1 - i; k++) {
    					System.out.print(" ");
    				}
    				for (int k = 1; k <= i; k++) {
    					System.out.print("* ");
    				}
    				System.out.println();
    			} else {
    				for(int k = 1; k <= (i - (hangshu / 2 + 1)); k++) {
    					System.out.print(" ");
    				}
    				for (int k = 1; k <= (2 * (hangshu / 2 + 1) - i); k++) {
    					System.out.print("* ");
    				}
    				System.out.println();
    			}
    		}
    	}

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