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/**
* @author licheng
* @function ¶þ·Ö²éÕÒ
*
* */
package com.licheng.array;
public class BinarySearch {
/**
* @author licheng
* *¶þ·Ö²éÕÒÌØ¶¨ÕûÊýÔÚÕûÐÍÊý×éÖеÄλÖÃ(µÝ¹é)
* @param dataSet(²éÕÒµÄÊý×é)
* @param data(²éÕÒµÄÊý¾Ý)
* @param beginIndex(¿ªÊ¼Ï±ê)
* @param endIndex(½áÊøÏ±ê)
* @return Êý¾ÝËùÔÚϱê
*
* */
public int binarySearch(int [] dataSet, int data, int beginIndex, int endIndex) {
//Èç¹û²éÕÒµÄÊýÒª±È¿ªÊ¼Ë÷ÒýµÄÊý¾ÝҪС»òÕßÊDZȽáÊøË÷ÒýµÄÊéÒª´ó£¬»òÕß¿ªÊ¼²éÕÒµÄË÷ÒýÖµ´óÓÚ½áÊøµÄË÷ÒýÖµ·µ»Ø-1ûÓв鵽
int minIndex = (beginIndex + endIndex)/2;
if (beginIndex > endIndex || data < dataSet[beginIndex] || data > dataSet[endIndex]) {
return -1;
}
if (data > dataSet[minIndex]) {
return binarySearch(dataSet, data, minIndex+1, endIndex);
} else if (data < dataSet[minIndex]) {
return binarySearch(dataSet, data, beginIndex, minIndex-1);
} else {
return minIndex;
}
}
/**
*¶þ·Ö²éÕÒÌØ¶¨ÕûÊýÔÚÕûÐÍÊý×éÖеÄλÖÃ(·ÇµÝ¹é)
*@param dataset
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package test;
import java.io.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
public class XmlTest {
public static void main(String[] args) {
File xmlFile=new File("test/xml.xml");
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Scanner scan = new Scanner(System.in);
scan.next();
scan.close();
scan = new Scanner(System.in);
scan.next();
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public class HelloWorld {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.print("Hello World!");
......