2020-10-05 Java练习题

注意：把class后面的类名改成你新建的文件名，然后把下面的代码拷贝运行即可

01: 200个鸡蛋，每打12，几打？余几个？

public class case01 {

	public static void main(String[] args) {
		System.out.println("200个鸡蛋是" + 200/12 + "打");
		System.out.println("剩余" + 200%12 + "个");
	}

}

运行结果：

09: for/while/do-while 写99乘法表

public class case09 {
	
	// for 循环实现99乘法表
	private static void showDo() {
		for (int i = 1; i <= 9; i++) {
			for (int j = 1; j <= i; j++) {
				System.out.print(j + "x" + i + "=" + j*i + "\t");
			}
			System.out.println();
		}
	}
	
	// while 循环实现99乘法表
	private static void showWhile() {
		int i = 1;
		while(i <= 9) {
			int j = 1;
			while(j <= i) {
				System.out.print(j + "x" + i + "=" + j*i + "\t");
				j++;
			}
			System.out.println();
			i++;
		}
	}
	
	// do/while 循环实现99乘法表
	private static void showDoWhile() {
		int i = 1;
		do {
			int j = 1;
			do {
				System.out.print(j + "x" + i + "=" + j*i + "\t");
				j++;
			} while(j <= i);
			System.out.println();
			i++;
		}while(i <= 9);
	}

	public static void main(String[] args) {
		System.out.println("\nfor循环写的：");
		showDo();
		System.out.println("\nwhile循环写的：");
		showWhile();
		System.out.println("\ndo/while循环写的：");
		showDoWhile();
		
		
	}

}

运行结果：

2020-10-05 Java练习题

原文：https://www.cnblogs.com/amnotgcs/p/13769992.html