User inputs a number of characters as a string, program then lists all the words from array that can be made

**p.katanic** · September 25th, 2019, 01:23 PM

Hello, I tried to solve these problem by myself but I realised that need help. I don't get annything at the output. Will be grateful for any help!

This task have a three condition:
1. Each letter can be used only once.
2.The letter can be used in any order.
3.The text input by the user must not be one of the words generated.

import java.util.Arrays;
import java.util.Scanner;
 
public class TYM6 {
	 String[] words = {"and", "love", "vole", "levo", "the"};
        // TODO: Read characters from user.
 
        // TODO: Loop throgh the words array, and see which words can be made from the user's input.
 
        // TODO: Output the words that can be made, one per line.
        // For the word love program should output: vole, levo
 
 
public void start1()
{
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter your characters: ");
    String chars = sc.nextLine();
    String word = Arrays.toString(words);
   // if(word1.length())
    try{
 
            boolean display=true;
            if(word.length()==chars.length()){  //checking if the length of user input word and words from array are equal
                for (int c = 0; c<chars.length(); c++)  
                {
                    if (word.indexOf(chars.charAt(c)) == -1) {   // Getting character from the list of characters that user typed at position c an search for that character in the //current word
                        display = false;
                        System.out.println("No match");
                    }
                }
                if (display) {
                    System.out.println(word);
                }
            }
 
 
    }
    catch (Exception e) {
        System.out.println("Couldn't find the list of words!");
    }
 
}
}
 
public class Main {
 
	public static void main(String[] args) {
 
		 TYM6 tym6 = new TYM6();
 
	        tym6.start1();
 
 
	}
 
}

**Norm** · September 25th, 2019, 02:14 PM

I don't get annything at the output.

What are you expecting to see in the output?

What is your input to the program? What should the output be for that input?

How are you trying to debug the program to see what the problem is? Try adding more print statements that display the values of variables as they are changed and used.

**p.katanic** · September 25th, 2019, 02:20 PM

For example, if user input word ovle, the program must show levo, love, vole,velo. I'm using Intellij IDEA but have trouble with debugging, getting notification Disconnected from the target VM, address: '127.0.0.1:63712', transport: 'socket'. Thanks for answer!

**Norm** · September 25th, 2019, 02:39 PM

Sorry, I do not know anything about Intellij IDEA or about using IP addresses to debug java code.
I do all my debugging at the command prompt window looking at the output from print statements.

The code need a main method to be able to execute it with the java command.

The code also needs some comments describing what steps it is taking to solve the problem.
For example what is the purpose of this statement:

String word = Arrays.toString(words);

Why is the array's contents placed in a String?

This comment makes no sense:

checking if the length of user input word and words from array are equal

When would the length of a single word be the same as the length of a group of words?

I think you need to stop coding for a while and spend some time working out the logic to solve the problem. Make a list of the steps the code needs to take. When the logic looks good, then move to writing the code.

**p.katanic** · September 25th, 2019, 03:03 PM

Thanks for answer. I have main method, just forget to copy it here, sorry.
String word = Arrays.toString(words); // I'll do that in order to use method IndexOf later in the code, but maybe it's my mistake, I'm not sure.

//checking if the length of user input word and words from array are equal - logic here is that if the word that user input is longer or shorter than the number of character from user input it's not a good word.

**Norm** · September 25th, 2019, 03:28 PM

Can you make a list of the steps the program needs to take to solve the problem?

Note: When adding comments to the code, try to make it so that none of the text goes past column 80. Split the comments to new lines as needed. Long lines require scrolling left-right and makes the code harder to read and understand.

**p.katanic** · September 25th, 2019, 03:34 PM

This is starting code from the examen.

import java.util.Scanner;

public class TestYourMettle6 {

String[] words = {"and", "love", "vole", "levo", "the"};

public void start() {
Scanner sc = new Scanner(System.in); // Do not remove for automated testing to work
// TODO: Read characters from user.

// TODO: Loop throgh the words array, and see which words can be made from the user's input.

// TODO: Output the words that can be made, one per line.
}

public static void main(String[] args) {
TestYourMettle6 tym6 = new TestYourMettle6();
tym6.start();
}
}

**Norm** · September 25th, 2019, 03:36 PM

This is starting code

Hold off writing any more code until you have a design or a list of the steps for the program to solve the problem.

**p.katanic** · September 25th, 2019, 03:55 PM

Any suggestion what steps to make? Should I use StringBuilder?

**Norm** · September 25th, 2019, 04:00 PM

Should I use StringBuilder?

Don't think about coding yet. Work on the logic details.

An example of the steps to take when tying shoe laces:
after foot is in shoe
pull up tongue of shoe
pick up left lace in left hand
pick up right lace in right hand
cross lace from one hand to the other and underneath the other lace
form a loop with the laces in both hands
etc

Work on a list of steps at the detail level to solve the problem.
How would you do it with paper and pencil?

**p.katanic** · September 27th, 2019, 05:30 AM

Hello, I solved my problem. Issue was a logical one. I have declared an array of words. The user then inputs some characters, and the program is supposed to tell the user which words can be made with the characters input. However, I never actually looping through the 'words' array - instead I was compared the characters the user has input, with the characters the user has input ( chars and word are the same thing).

public class TYM6 {
    String[] words = {"and", "love", "love", "love", "vole", "levo", "the"};
    public void start() {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter your characters: ");
        String chars = sc.nextLine();
 
        // Loop through the words array
        for (String word : words) {
            boolean display = true;
            if (word.length() == chars.length()) {
                // Loop through characters from user input, make sure the current
                // word has all characters from user input
                for (int c = 0; c < chars.length(); c++) {
                    if (word.indexOf(chars.charAt(c)) == -1) {
                        // One of the characters was not found, so do not display
                        display = false;
                    }
                }
                if (display) {
                    // All characters found, so display
                    System.out.println(word);
                }
            }
        }
    }
 
    public static void main(String[] args) {
        TYM6 tym6 = new TYM6();
        tym6.start();
    }
}

**Norm** · September 27th, 2019, 06:02 AM

Glad you got it to work.

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