Draw a diamond with for loop in java?

Answer 1

// Import Library

import javax.swing.*;

//Beginning class Diamond

public class Diamond

{

//Main method

public static voidmain(String[] args)

{

//Declaring Variables

String strRow = null;

double dblRow = 0;

//GUI user input

strRow = JOptionPane.showInputDialog("Please enter an ODD number ");

dblRow = Integer.parseInt(strRow);

//validate a odd number

if ((dblRow % 2)== 0)

//if not an odd number user is advised

JOptionPane.showMessageDialog(null, "The number entered is not an ODD number. Please, try again");

//Building diamond

else

{

//setting up first 1/2 of the diamond - rows

for(int a=1; a<(dblRow/2+.5); a++ )

{

//Assigning empty spaces from right side

for (int b=1; b<(dblRow/2+1.5)-a; b++)

{

System.out.print(" ");

}

//filling out with *

for(int c=0; c<(a*2)-1; c++)

System.out.print("*");

System.out.println();

}

//Creating middle line of the diamond

for(int d=1; d

{

System.out.print("=");

}

System.out.println();

//setting our second 1/2 of the diamond - rows

for(int a=1; a<(dblRow/2+.5); a++ )

{

//Assigning empty spaces from right side in second part of diamond

for(int c=0;c

System.out.print(" ");

//filling out with *

for(int b=1; b

{

System.out.print("*");

}

System.out.println();

}

}

}

}

Answer 2

int longestRow = x;

for(int row=1; row<=longestRow;row++){ //places the symbols for the diamond

int i = (2*row) - 1;

if(i>longestRow) i = 2*(longestRow-row+1) - 1;

for(int column=0 ; column<(longestRow-i)/2 ;column++) System.out.print(" "); //creates the empty spaces for the diamond

for(int column=0 ; column<i ; column++) System.out.print(ch);

for(int column=0 ; column<(longestRow-i)/2 ; column++) System.out.print(" ");

System.out.println(); //prints the diamond

//first you have to define ch for the character you want to use, and also enter the number for the longest row and you should be set