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diff --git a/nlpsolver/ThirdParty/EvolutionarySolver/src/net/adaptivebox/goodness/BCHComparator.java b/nlpsolver/ThirdParty/EvolutionarySolver/src/net/adaptivebox/goodness/BCHComparator.java
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+/**
+ * Description: For formation the basic goodness landscape.
+ *
+ * Author          Create/Modi     Note
+ * Xiaofeng Xie    Jun 24, 2003     Created
+ * Xiaofeng Xie    May 11, 2004
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * Please acknowledge the author(s) if you use this code in any way.
+ *
+ * @version 1.0
+ * @Since MAOS1.2
+ *
+ * [1] Deb K. An efficient constraint handling method for genetic algorithms.
+ * Computer Methods in Applied Mechanics and Engineering, 2000, 186(2-4): 311-338
+ */
+
+package net.adaptivebox.goodness;
+
+public class BCHComparator implements IGoodnessCompareEngine {
+
+  /* check the magnitude of two array, the frontal is more important */
+  private static int compareArray(double[] fit1, double[] fit2) {
+    for (int i = 0; i < fit1.length; i++) {
+      if (fit1[i] > fit2[i]) {
+        return LARGER_THAN; // Large than
+      } else if (fit1[i] < fit2[i]) {
+        return LESS_THAN; // Less than
+      }
+    }
+    return IGoodnessCompareEngine.EQUAL_TO; // same
+  }
+
+  public int compare(double[] fit1, double[] fit2) {
+    return compareArray(fit1, fit2);
+  }
+}