/* 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
	{
	    String imei = "36529874";
	    int size = imei.length()/2;
	    String[] grupos = new String[size];
	    for (int i = 0; i < size; i++) {
	        grupos[i] = imei.substring(i*2, i*2+2);
	    }
 
	    //Apenas para imprimir
	    for (String s : grupos) {
	    	System.out.println(s);
	    }
	}
}

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