Question

write a program lower left half which takes two dimensional array a , with size n rows and n column as argument and prints the lower half
​

Answer 1

Program:-

This is the required program for the question.

import java.util.*;

class Arrays

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

int N;

System.out.print("Enter the number of rows for the 2d array: ");

N=sc.nextInt();

System.out.println("Enter the numbers in the matrix.");

int a[][]=new int[N][N];

//taking input

for(int i=0;i<N;i++)

{

for(int j=0;j<N;j++)

{

System.out.print("["+i+"]["+j+"] = ");

a[i][j]=sc.nextInt();

}

System.out.println();

}

}

//displaying on screen

for(int i=0;i<N;i++)

{

for(int j=0;j<=i;j++)

System.out.print(a[i][j]+"\t");

System.out.println();

}

}// end of main()

}// end of class.

Answer 2

Answer:

Explanation: I didn't understand