java 循环的重口味题目【菱形变换字符】

ゝ一纸荒年。 2023-10-08 12:16 16阅读 0赞

变换字符菱形

**/*
         A
        ABA
       ABCBA
      ABCDCBA
     ABCDEDCBA
    ABCDEFEDCBA
     ABCDEDCBA
      ABCDCBA
       ABCBA
        ABA
         A
    */**
    import java.util.Scanner;
    class Test3 {
        
    	public static void main (String[]  args) {
        
    		Scanner input = new Scanner(System.in);
    		int rows = 0;
    		do {
        
    			System.out.println("请输入一个奇数行号：");
    			rows = input.nextInt();
    		} while (rows % 2 == 0);
    		System.out.println("输入的行号：" + rows);
    	
    		int up = rows / 2 + 1;
    		int down = rows / 2;
    		int down1 = down;
    		char ch = 'A';
    		打印上半段
    		for (int  j = 1; j <= up; j++) {
        
    			for (int i = up; i > j; i--) {
        
    				System.out.print(" ");
    			}
    			for (int i = 1; i <= j * 2 - 1; i++) {
        
    				if (j == 1) {
        
    					System.out.print(ch);
    				} else if (i <= (j * 2 - 1) / 2) {
        
    					System.out.print(ch);
    					ch += 1;
    				} else {
        
    					System.out.print(ch);
    				    ch -= 1;
    				}
    			}
    			ch = 'A';
    			System.out.println();
    		}
    		//打印下半段
    		for (int i = down; i >= 1; i--) {
        
    			for (int j = i; j <= down; j++) {
        			
    				System.out.print(" ");
    			}
    			for (int  j = 2 * i - 1; j >= 1; j--){
        	
    				if (i == 1) {
        
    					System.out.print(ch);	
    				} else if (j - 1 > (2 * i - 1) / 2) {
        
    					System.out.print(ch);
    					ch += 1;
    					
    				} else {
        
    					System.out.print(ch);
    				    ch -= 1;
    				}
    			}		
    			ch = 'A';
    			System.out.println();
    		}
    	}
    }