nlpsolver/ThirdParty/EvolutionarySolver/src/net/adaptivebox/global/GlobalCompare.java

   1 /**
   2  * Description: Global package for comparison.
   3  *
   4  * @ Author        Create/Modi     Note
   5  * Xiaofeng Xie    Jun 15, 2002    xiaofengxie@tsinghua.org.cn
   6  *
   7  *
   8  * @version 1.0
   9  * @Since MAOS1.0
  10  */
  11
  12
  13 package net.adaptivebox.global;
  14
  15 public class GlobalCompare {
  16
  17 /* compare the data1 and data2, if data1=data2, return 0
  18  * if data1 < data2, return LESS_THAN, else if data1 > data2, LARGER_THAN
  19  **/
  20   static public int compare(double data1, double data2) {
  21     if (data1 < data2)
  22       return CompareValue.LESS_THAN;
  23     else if (data1 > data2)
  24       return CompareValue.LARGER_THAN;
  25     else
  26       return CompareValue.EQUAL_TO;
  27   }
  28
  29 /* check the magnitude of two array, the frontial is more important
  30  **/
  31   public static int compareArray(double[] fit1, double[] fit2) {
  32     if (fit1.length!=fit2.length) {
  33       return CompareValue.INVALID;  //error
  34     }
  35     for (int i=0; i<fit1.length; i++) {
  36       if (fit1[i]>fit2[i]) {
  37         return CompareValue.LARGER_THAN; //Large than
  38       } else if (fit1[i]<fit2[i]){
  39         return CompareValue.LESS_THAN; //Less than
  40       }
  41     }
  42     return CompareValue.EQUAL_TO; //same
  43   }
  44 }