package main;
import java.util.Arrays;
import java.util.List;
import java.util.ArrayList;
class ParseArray {
public static void main( String [] args ){
String input = "[ [ 1] , [2,3],[4, 5,6 , 7],[8,9,10 , 11, 12, 13] ]";
List<String[]> multiDimArray = new ArrayList<String[]>();
String [] parts = input
.replaceAll("\\s*\\[\\s*","[") // clean starting spaces
.replaceAll("\\s*,\\s*", ",") // middle spaces
.replaceAll("\\s*\\]\\s*","]") // ending spaces
.replaceAll("\\[\\[|\\]\\]","") // and remove leading an trailing [['s and ]]'s
.split("\\],\\["); // finally split by ],[
for( String s : parts ){
multiDimArray.add( s.split(",") ) ;
}
String [][] result = multiDimArray.toArray( new String[multiDimArray.size()][]);
print( result );
}
public static void print( String[][] array ){
System.out.println( Arrays.deepToString( array ));
}
}