javaʵÏֵĻôÄɹæÔòµÄ¶àÏîʽ¼ÆËã
»ôÄɹæÔò¶àÏîʽ¼ÆËãÈç¹ûʹÓÃÆÓËØµÄ¶àÏîʽÇóÖµ£¬Ê±¼ä¸´ÔÓ¶ÈΪO(n*n)£¬¶øÊÇÓÃÁË»ôÄɹæÔò¿ÉÒÔʹÓõݹé»òÕßµü´úÀ´ÊµÏÖ£¬Ê±¼ä¸´ÔÓ¶ÈÊÇO(n),ÏÂÃæÊÇÔ´´úÂë:
/*
* ʵÏÖ»ôÄɹæÔòµÄ¶àÏîʽ¼ÆËãʱ¼ä¸´ÔÓ¶ÈΪO(N)
*/
public class HuonaRule {
public static void main(String args[])
{
double data[]=new double[]{1.0,2,2,3,4};
double x=3;
System.out.println(huonaFunction(data,x,data.length));
}
/*
* dataΪ¶àÏîʽµÄϵÊýÊý×飬xΪֵ£¬nΪϵÊýÊý×éµÄ³¤¶È
* Y=a0+a1*X+a2*X^2+.....+an*X^n;
* Y=a0+X(a1+X(a2+X(a3+X(...))))
*/
public static double huonaFunction(double[] data,double x,int n)
{
double y=0;
int i=n-1;
while( i>=0 )
{
y=x*y+data[i];
i--;
}
return y;
}
}
Ïà¹ØÎĵµ£º
£¨×¢£ºÇ°ÃæÐ´ÁËÒ»¸ö³¬´óÕûÊýÏà¼ÓµÄÀ࣬²Î¼û£º ³¬´óÕûÊýÏà¼Ó£¬³¬¹ýÁËlongµÄ·¶Î§£¬ÄãÒªÔõô×ö£¡£¬ºóÀ´ÓÐÅóÓÑÆÀÂÛ˵BigDecimal¿ÉÒÔÍêȫʵÏÖÎÒµÄÕâÕâ¸ö¹¦ÄÜ£¬¸Õ¿ªÊ¼µÄʱºò£¬ÎÒ»¹²»·þÆø£¬¾ÝÎÒËùÖªÄÇÀïÓÐÕâÑùµÄÀàŶ£¬ºóÀ´±¨×Å˵·þËûµÄÐÄÀíÈ¥ÕÒÁËһϣ¬ºÇºÇ£¬½á¹û¾ÓÈ»×Ô¼º±»Ëµ·þÁË£¬È·ÊµÓÐÕâôһ»ØÊ£¬ÀûÓÃBigDecimal²Ù×÷³¬´óÕûÊýÒ ......
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class GB2UTF
{
public static String GBK2Unicode(String str)
{
StringBuffer result = new StringBuffer();
for (int i = 0; i < str.length(); i++)
&n ......
ÔÚ´¦Àí¼à²âÊý¾Ýʵʱ¼Èëʱ,ÐèÒªÌṩµ±Ç°°à´ÎÐÅÏ¢{´ó°×°à,Сҹ°à,´óÒ¹°à}£¬°à´ÎÐÅÏ¢ÊǸù¾Ý¸ø¶¨Ê±¼ä¶Î½øÐÐÉ趨ÀàËÆ{{"8:00","16:00"},{"16:00","00:00"},{"00:00","8:00"}}
´¦Àí°ì·¨
· È¡µ±Ç°Ê±¼ä¡¢×ª»»ÑéÖ¤Æðʼ¡¢½áÊøÊ±¼ä½øÐбȽϡ£
Ïà¹Ø´úÂë
/**
* ʱ¼ä¶Î²âÊÔ
......
ÏÂÃæÊÇʹÓÃjavaʵÏֵĵݹéÄæÐò¶Ô²éÕÒ£¬ËùνµÄÄæÐò¶Ô¾ÍÊÇÔÚÊý×éA[]ÖÐÈç¹û i < j ,²¢ÇÒA[i] > A[j], ÔòÎÒÃÇ˵A[i]ºÍA[j]ÊÇÒ»¶ÔÄæÐò¶Ô¡£Èç¹ûÓÃÆÕͨµÄË㷨ʵÏֵϰ£¬²éÕÒµÄʱ¼ä¸´ÔÓ¶È£¬ÊÇO(N*N)£¬Ê¹ÓÃÕâÀïµÄ¶Ó¹æµÄ·½Ê½²éÕҵϰ£¬Ê±¼ä¸´ÔÓ¶ÈÊÇO(N*lgN)
import java.util.Date;
import java.util.Random;
/*
* ʹÓõݹ ......
inner classºÍouter classÖ®¼äµÄreflectionÓ¦Óá£
package com.gaoqian.reflection;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
class IncludeInn ......