AsciiArt

AsciiArt.java

import java.util.Scanner;

public class AsciiArt1 {

	public static void main(String[] args){
		
		Scanner keyboard = new Scanner(System.in);
		
		//declaring variables
		int userInput;
		int space = 5;
		int width = 0;
		int num = 0;
		int oddOrEven = -1;
		
		//asking the user for input
		System.out.println("Choose one of the following patterns by typing the corresponding number: ");
		System.out.println("1) 5x5 Grid");
		System.out.println("2) Checker Board");
		System.out.println("3) Reverse Diagonal");
		userInput = keyboard.nextInt();
		
		
		if(userInput == 1){
		//loop for 5x5 grid
			for(int i = 0; i < space; i++){
				System.out.print(num);
				for(int j = 0; j < space; j++){
					System.out.print(" *");
				}
				System.out.println();
				num++;
			}
		}
		
		else if(userInput == 2){
			//loop to make Checker Board
			for(int i = 0; i < space; i++){
				System.out.print(num + " ");
				num++;
				for(int j = 0; j < space; j++){
					if((i % 2 == 0 && j % 2 == 0) || (i % 2 == 1 && j % 2 == 1))
						System.out.print(" *");
					if( (i % 2 == 1 && j % 2 == 0) || (i % 2 == 0 && j % 2 == 1))
						System.out.print("  ");
				}
				System.out.println();
			}
		}
		
		else if(userInput == 3){
			for (int i = 0; i < space; i++){
				System.out.print(num + " ");
				num++;
				for(int j = 0; j < space; j++){
				}
				System.out.println();
			}
			//loop to make Reverse Diagonal
			/*while (width < 5){
				System.out.print(num + " ");
				if(num == 4)
					System.out.print("*");
				if(num == 3)
					System.out.print("  *");
				if(num == 2)
					System.out.print("    *");
				if(num == 1)
					System.out.print("      *");
				if(num == 0)
					System.out.print("        *");
					
				
				width++;
				num++;
				System.out.println();
			}*/
		}
	}
}

Hmm, having a hard time thinking of a clue without just doing it. Here's my first thought of how I'd do it:

// Reverse Diagonal
for (int i =0; i < space; i++) {
  System.out.print(num + " ");
  num++;

  for (int j=0; j < space; j++) {
    if (j + i == 5) {
      System.out.print(" *");
    else {
      System.out.print(" ");
    }
}