java ¶þ·Ö·¨
public class Test4 {
public int binarySearch(int[] items, int value){
int startIndex = 0;
int stopIndex = items.length - 1;
int middle = (int)Math.floor((stopIndex + startIndex)/2);
while(items[middle] != value && startIndex < stopIndex){
//adjust search area£¨µ÷Õû²éÕÒ·¶Î§£©
if (value < items[middle]){
stopIndex = middle - 1;
} else if (value > items[middle]){
startIndex = middle + 1;
}
//recalculate middle£¨ÖØÐ¼ÆËãÖÐÏîË÷Òý£©
middle = (int)Math.floor((stopIndex + startIndex)/2);
}
//make sure it's the right value£¨È·±£·µ»ØÕýÈ·µÄÖµ£©
return (items[middle] != value) ? -1 : middle;
}
/**
* @param args
*/
public static void main(String[] args) {
Test4 t = new Test4();
int aa[]={1,3,5,7,9};
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!"+t.binarySearch(aa, 5));
}
}
Ïà¹ØÎĵµ£º
һЩÎÞÁĵĴúÂëÖ®Ò»£ºJAVAÖеÄÈÕÆÚ¼ÆËã
/*
* DateCalculate.java , Created on 2005-3-18
* Copyright 2005 AAA Information Technology CO.LTD. All rights reserved.
*
* ×÷³ÉÈÕÆÚ: 2005-3-18
* ÐÞ¸ÄÂÄÀú:
*
*/
package com.bjb.xyh.util;
import java.text.DecimalFormat;
//import java.text.Pars ......
×î½üÑо¿ÏÂsocket,ctrl+vÁËÏÂÍøÉϵĶ«Î÷:
ÊÂʵÉÏÍøÂç±à³Ì¼òµ¥µÄÀí½â¾ÍÊÇÁ½Ì¨¼ÆËã»úÏ໥ͨѶÊý¾Ý¶øÒÑ¡£¶ÔÓÚ³ÌÐòÔ±¶øÑÔ£¬È¥ÕÆÎÕÒ»ÖÖ±à³Ì½Ó¿Ú²¢Ê¹ÓÃÒ»ÖÖ±à³ÌÄ£ÐÍÏà¶Ô¾Í»áÏԵüòµ¥µÄ¶àÁË¡£Java SDKÌṩһЩÏà¶Ô¼òµ¥µÄApiÀ´Íê³ÉÕâЩ¹¤×÷£¬Socket¾ÍÊÇÆäÖÐÖ®Ò»¡£
¡¡¡¡¶ÔÓÚJava¶øÑÔ¡£ÕâЩApi´æÔÚÓëJava.netÕâ¸ö ......
×î½üÃæÊÔÁ˺ܶ๫˾£¬Ò»Ð©±ÊÊÔºÍÃæÊÔµÄÎÊÌâÈÃÎÒÉîÓид¥¡£ËäȻ˵×Ô¼º¶ÔJavaÒѾºÜÊìϤÁË£¬²»¹ýµ±Ãæ¶ÔһЩϸ½ÚµÄʱºò£¬×Ô¼ºÈ·ÊµÓеãÎÞ´ÓÏÂÊÖ¡£ÏÂÃæ¼òµ¥µÄÁоټ¸¸öÀý×Ó£º
1.JavaÖжѺÍÕ»µÄÇø±ð
Æäʵ£¬Õâ¸öÎÊÌâ²¢²»ÊǺÜÄÑ¡£²»¹ýÒ²ÐíºÜ¶à³ÌÐòÔ±ÍùÍùºöÂÔÁËÕâÒ»µã£¬ÓÈÆ ......
package com.test.For_Each;
¡¡¡¡import java.util.ArrayList;
¡¡¡¡import java.util.Iterator;
¡¡¡¡import java.util.List;
¡¡¡¡public class ForTest
¡¡¡¡{
¡¡¡¡public static void main(String args[])
¡¡¡¡{
¡¡¡¡int arr[] = {1, 2, 3, 4, 5, 6, 7, 8};
¡¡¡¡/**
¡¡¡¡* ÐÂʽд·¨
¡¡¡¡*/
¡¡¡¡f ......
Õâ¶Ìʱ¼ä£¬Íê³ÉÁËÒ»¸ö½ÏΪ¼òµ¥µÄϵͳ Ò»¸ö½ÌÓýÅàѵ»ú¹¹µÄÐÅÏ¢¹ÜÀíϵͳ£¬Ö÷ÒªÊÇͨ¹ý²»Í¬µÄ½ÇÉ«·ÖÅä½øÈ벻ͬµÄ½çÃæ£¬×öÏàÓ¦µÄ¹¤×÷£¬ÒòΪÔÚȨÏÞ·½Ã滹ûŪºÃ£¬Ã»ÓÐÓõ½Ajax¡£½ÇÉ«ÓÐϵͳ¹ÜÀíÔ±£¬×ÉѯÖ÷¹Ü£¬×Éѯʦ£¬Êг¡×¨Ô±£¬Êг¡²¿Ö÷¹Ü£¬ÁªÏµÈË£¬µÈµÈ¡£ÒòΪµ±³õдµÄʱºò£¬ÏµÍ³µÄÀ©Õ¹ÐÔ»¹¿ÉÒÔ£¬ËùÒÔÄã¿ÉÒÔÔö¼ÓÒ»¸ö½ÇÉ«£¬ ......