Java 打印 1 和 0 的直角三角形程序

编写一个Java程序，使用for循环打印1和0的直角三角形。

import java.util.Scanner;

public class RightTriangle10Num1 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Triangle of 1 and 0 Pattern Rows = ");
		int rows = sc.nextInt();
	
		System.out.println("Printing Right Triangle of 1 and 0 Numbers");
		
		for (int i = 1 ; i <= rows; i++ ) 
		{
			for (int j = 1 ; j <= i; j++ ) 	
			{
				if(j % 2 == 0) {
					System.out.print(0);
				}
				else {
					System.out.print(1);
				}
			}
			System.out.println();
		}
	}
}

这个Java示例使用while循环显示交替的1和0的直角三角形。

import java.util.Scanner;

public class RightTriangle10Num2 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Triangle of 1 and 0 Pattern Rows = ");
		int rows = sc.nextInt();
	
		System.out.println("Printing Right Triangle of 1 and 0 Numbers");
		int i = 1, j; 
		
		while(i <= rows ) 
		{
			j = 1 ;
			while ( j <= i ) 	
			{
				if(j % 2 == 0) {
					System.out.print(0);
				}
				else {
					System.out.print(1);
				}
				j++;
			}
			System.out.println();
			 i++;
		}
	}
}

Enter Triangle of 1 and 0 Pattern Rows = 9
Printing Right Triangle of 1 and 0 Numbers
1
10
101
1010
10101
101010
1010101
10101010
101010101

Java 使用 do while 循环打印 1 和 0 的直角三角形程序。

import java.util.Scanner;

public class RightTriangle10Num3 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Triangle of 1 and 0 Pattern Rows = ");
		int rows = sc.nextInt();
	
		System.out.println("Printing Right Triangle of 1 and 0 Numbers");
		int i = 1, j; 
		
		do
		{
			j = 1 ;
			do	
			{
				if(j % 2 == 0) {
					System.out.print(0);
				}
				else {
					System.out.print(1);
				}

			} while ( ++j <= i ) ;
			System.out.println();

		} while(++i <= rows );
	}
}

Enter Triangle of 1 and 0 Pattern Rows = 14
Printing Right Triangle of 1 and 0 Numbers
1
10
101
1010
10101
101010
1010101
10101010
101010101
1010101010
10101010101
101010101010
1010101010101
10101010101010