/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int apps = 8;
 
        StringBuilder Row1 = new StringBuilder();
 
        StringBuilder Row2 = new StringBuilder();
 
        for (int i = 0; i <= apps; i++) {
            if ( i<4) {
                Row1.append(i );
            }
            if (i>3 && i<8) {
                Row2.append( i);
            }
        }
        System.out.println(Row1 +  " " + Row2);
	}
}

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