CODEWITHSUNDEEP
javaarraysprinting
Marek
Marek

Reputation: 135

how to print Multiple String arrays output in a single line

I have 3 String arrays. I want to print the all the 3 single arrays one after another in java. So like my 2 arrays look like-

  o  
 ooo 
ooooo
 ooo 
  o  

  o o
ooooo
 ooo 
ooooo
 o oo

I want to print each element of the array one after another (right next to eachother)

Current code result-

  o  
 ooo 
ooooo
 ooo 
  o  
  o o
ooooo
 ooo 
ooooo
 o oo
 o o 
 ooo 
ooooo
 ooo 
  o

So expected output 

  o  o o o  o  
 ooo ooooo oooo
ooooo ooo oooo 
 ooo ooooo oooo

The output above may differ from inputs, but its just the sample I am showing . This is how I am expecting to print.

current code-

    String[] tp1 = { "  o  ", " ooo ", "ooooo", " ooo ", "  o  " };
    String[] tp2 = { "  o o", "ooooo", " ooo ", "ooooo", " o oo" };
    String[] tp3 = { " o o ", " ooo ", "ooooo", " ooo ", "  o  " };
    List<String[]> values = new ArrayList<>();
    values.add(tp1);
    values.add(tp2);
    values.add(tp3);
    for (String[] strings : values) {
        String output = "";
        for (String string : strings) {
            output += string;
            output += "\n";
        }
        System.out.print(output);
    }

Upvotes: 0

Views: 5512

Answers (3)

KIC
KIC

Reputation: 6121

Using Java 8 you can use the new forEach and a Lambda like this:

        values.forEach(value -> {
            Arrays.asList(value).forEach(array -> System.out.print(array));
            System.out.println();
        });

which results in 

  o   ooo ooooo ooo   o  
  o oooooo ooo ooooo o oo
 o o  ooo ooooo ooo   o

If you realy want this:

  o    o o o o 
 ooo ooooo ooo 
ooooo ooo ooooo
 ooo ooooo ooo 
  o   o oo  o

You can do this like so:

    for (int i=0; i<tp1.length; i++) {
        final int j = i;
        values.forEach(value -> System.out.print(value[j]));
        System.out.println();
    };

But then I would recommend you to flip the list and or the arrays. Since it is not clear if all arrays tp1..3 will have the same length. For example this way:

        String[] tp1 = { "  o  ", "  o o", " o o "};
        String[] tp2 = { " ooo ", "ooooo", " ooo "};
        String[] tp3 = { "ooooo", " ooo ", "ooooo" };
        String[] tp4 = { "  o  ", " o oo" , "  o  " };

        ArrayList<String[]> values = new ArrayList<>();
        values.add(tp1);
        values.add(tp2);
        values.add(tp3);
        values.add(tp4);

        values.forEach(value -> {
            Arrays.asList(value).forEach(array -> System.out.print(array));
            System.out.println();
        });

Upvotes: 1

Blip
Blip

Reputation: 3171

To get that output you don't require the values variable. You have to output the 1st string of all the arrays in a single line so change your for loop to 

for (int i = 0; i < 5; i++) {
    System.out.println(tp1[i]+tp2[i]+tp3[i]);
}

I feel this should solve your problem.

Upvotes: 0

Codebender
Codebender

Reputation: 14461

You need to invert your for loops. And hence you cannot you the for each syntax.

Use,

for (int i = 0; i < tp1.length; i++) {
    for (int j = 0; j < values.size(); j++) {
        System.out.print(values.get(j)[i]);
    }
    System.out.println(" ");
}

Upvotes: 1

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