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/**
*Ãû³Æ:BinarySearch
*¹¦ÄÜ:ʵÏÖÁËÕÛ°ë²éÕÒ(¶þ·Ö²éÕÒ)µÄµÝ¹éºÍ·ÇµÝ¹éËã·¨.
*˵Ã÷:
*     1¡¢ÒªÇóËù²éÕÒµÄÊý×éÒÑÓÐÐò,²¢ÇÒÆäÖÐÔªËØÒÑʵÏÖComparable<T>½Ó¿Ú,ÈçInteger¡¢StringµÈ.
*    2¡¢·ÇµÝ¹é²éÕÒʹÓÃsearch();,µÝ¹é²éÕÒʹÓÃsearchRecursively();
*
*±¾³ÌÐò½ö¹©±à³Ìѧϰ²Î¿¼
*
*@author:   Winty
*@date:     2008-8-11
*@email:    wintys@gmail.com
*/
class BinarySearch<T extends Comparable<T>> {
    private T[]  data;//ÒªÅÅÐòµÄÊý¾Ý
    public BinarySearch(T[] data){
        this.data = data;
    }
    public int search(T key){
        int low;
        int high;
        int mid;
        if(data == null)
            return -1;
        low = 0;
        high = data.length - 1;
        while(low <= high){
            mid = (low + high) / 2;
            System.out.println("mid " + mid + " mid value:" + data[mid]);///
            
            if(key.compareTo(data[mid]) < 0){
                high = mid - 1;
            }else if(key.compareTo(data[mid]) > 0){
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