CODEWITHSUNDEEP
java
Frank Hicks Healy
Frank Hicks Healy

Reputation: 27

Convert looped output into an array

Having a problem converting loop output into an array. I am converting a decimal into binary form but I want it to print out from left to right rather than in a vertical line. I assume there is a way to add the loop output into an array 1 by 1. My code snipet from the program:

    if (choice == 2)//convert decimal to binary
    {
        System.out.println("Enter a decimal digit between -512 and 511 to convert to binary.");
        decimal = keyboard.nextInt();
        decimal2 = decimal;
        while(decimal > 0){

            decimal2 = decimal % 2;
            decimal = decimal /2;
            System.out.println(decimal2);


        }

    }

Thanks for any help!

Upvotes: 0

Views: 106

Answers (4)

abk
abk

Reputation: 311

You can use a string to concatenate the remainder values.

String ans="";

inside the loop

decimal2 = decimal % 2;
decimal = decimal /2;
ans = decimal1+ans;

outside the loop you print:

System.out.println(ans);

Upvotes: 1

Fahim Parkar
Fahim Parkar

Reputation: 31637

Use Java conventions while writing Java programs... 

if (choice == 2)//convert decimal to binary {
    System.out.println("Enter a decimal digit between -512 and 511 to convert to binary.");
    decimal = keyboard.nextInt();

    System.out.print("Binary number is ");
    while(decimal > 0) {
        System.out.print(decimal % 2);
        decimal = decimal / 2;
    }
}

Note:

If you don't need to write like above, you can use below too

System.out.println("Binary of number is : " + Integer.toBinaryString(keyboard.nextInt()));

Good Luck!!!

Upvotes: 0

Hunter McMillen
Hunter McMillen

Reputation: 61512

Whenever possible you should use the built-in Java methods, because they are generally more reliable than anything you write:

You can use Integer.toBinaryString() to easily convert to from decimal to binary:

example:

//read from STDIN
decimal = keyboard.nextInt();

//Converts decimal to a binary representation in String format
String bitString = Integer.toBinaryString(decimal);

//print result to STDOUT
System.out.println(bitString);

Note: another advantage to doing it this way is all of the digits of the binary number are side by side. Which I believe was your original goal.

Upvotes: 0

Oleksi
Oleksi

Reputation: 13097

You can just use System.out.print(decimal2) instead of println(), which inserts the newline character.

Upvotes: 0

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