다중for문_구구단 출력

import java.util.Scanner;

public class Ex_다중for문 {

	public static void main(String[] args) {
		
		// 구구단 출력하기
		
		Scanner sc = new Scanner(System.in);
		
		for(int i = 2; i < 10; i++ ) {
			System.out.println("=="+i+"단 ==");
			
			for(int k = 1; k < 10; k++) {
				System.out.println(i+"*"+k+"="+(i*k));
			}
			System.out.println();
			
		}
		
		

	}

}

---

import java.util.Scanner;

public class Ex_다중for문 {

	public static void main(String[] args) {
		
		// 구구단 출력하기
		
		Scanner sc = new Scanner(System.in);
		
		for(int i = 2; i <= 9; i++) {
			System.out.print(i+"단 : ");
			
			for(int j = 1; j <= 9; j++) {
				System.out.print(i+"*"+j+"="+(i*j)+"\t");
			}
			System.out.println();
		} 
		

	}

}

---

import java.util.Scanner;

public class Ex_다중for문 {

	public static void main(String[] args) {
		
		// 구구단 출력하기
		
		Scanner sc = new Scanner(System.in);
		
		for(int i = 1; i <= 9; i++) {
			for(int j = 2; j <= 9; j++) {
				System.out.print(j+"*"+i+"="+(j*i)+"   ");
			}
			System.out.println();
		} 
		

	}

}