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));
}
}
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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 ......
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Çý¶¯£ºoracle.jdbc.driver.OracleDriver
URL£ºjdbc:oracle:thin:@<machine_name><:port>:dbname
×¢£ºmachine_name£ºÊý¾Ý¿âËùÔڵĻúÆ÷µÄÃû³Æ£»
port£º¶Ë¿ÚºÅ£¬Ä¬ÈÏÊÇ1521
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