package eu.fbk.rdfpro.util;
   
   import java.util.ArrayList;
   import java.util.List;
   
   import org.junit.Test;
   
   public class StringTest {
   
      @Test
      public void test() {
  
          final List<String> list = new ArrayList<String>();
          final List<char[]> list2 = new ArrayList<char[]>();
          for (int i = 0; i < 1000; ++i) {
              final String s = "this is " + Math.random() + " times a string with " + Math.random()
                      + " characters";
              list.add(s);
              final int len = s.length();
              final char[] cb = new char[len];
              s.getChars(0, len, cb, 0);
              list2.add(cb);
          }
  
          final long ts0 = System.nanoTime();
  
          int sum = 0;
          for (int j = 0; j < 100000; ++j) {
              for (final char[] s : list2) {
                  final int len = s.length;
                  for (int i = 0; i < len; ++i) {
                      sum += s[i] * j;
                  }
                  // for (int i = 0; i < len; ++i) {
                  // sum += s.charAt(i) * j;
                  // }
              }
          }
  
          final long ts1 = System.nanoTime();
  
          System.out.println(sum + " " + (ts1 - ts0) / 1000000);
      }
  }