Question

Write a program in Java to display the following pattern. The program should

accept the rows to be printed using the scanner class. For example, if the user

enters 7 the following pattern gets printed

1

1 0

1 0 1

1 0 1 0

1 0 1 0 1

1 0 1 0 1 0

1 0 1 0 1 0 1​

Answer 1

Answer:

n=Sc.nextInt(); // no. of rows taken as input

for(i=1;i<=n;i++)

{

if(i%2==0)

System.out.println("0");

else

System.out.println("1");

}

Answer 2

Question:-

Write a program in Java to print the following pattern.

1

1 0

1 0 1

1 0 1 0

1 0 1 0 1

1 0 1 0 1 0

1 0 1 0 1 0 1

Solution:-

This is the shortest code.

import java.util.*;

class Program

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

int i,j, n;

System.out.print("Enter the number of rows: ");

n=sc.nextInt();

System.out.println("Here is your pattern: ");

for(i=1;i<=n;i++)

{

for(int j=1;j<=i;j++)

System.out.print(j%2+" ");

System.out.println();

}

}

}