CÓïÑÔȤζ³ÌÐò£¨²»µ½£©°ÙÀý Ö®JavaʵÏÖ

package zzq.main;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
/************************************************************************
* CÓïÑÔȤζ³ÌÐò£¨²»µ½£©°ÙÀý-Ö®JavaʵÏÖ
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*
* @author lazybone 2010-05-14
*
************************************************************************/
public class JavaFun {
public static void main(String[] args) {
long start = System.currentTimeMillis();
new JavaFun().KaBuLieKe83(3976, 0);
long over = System.currentTimeMillis();
System.out.println("Cost:" + (over - start) + " ms.");
}
/**
* 83¡£¿¨²¼Áп˳£Êý£¬Í¦ºÃÍ棬ʵÏÖÒ»ÏÂ
*/
public void KaBuLieKe83(int n, int count) {
int cha = getTheMaxOrMin(n, 1) - getTheMaxOrMin(n, 0);
System.out.println(count + ":" + getTheMaxOrMin(n, 1) + "-"
+ getTheMaxOrMin(n, 0) + " = " + cha);
count++;
if (n == 6174) {
System.out.println("I did it 6174");
} else {
KaBuLieKe83(cha, count);
}
}
/**
* 80.ÆæÊýƽ·½ºÍ£¨ºÍºóÃ漸¸ö£©¸ù±¾ÎÞ·¨µÃµ½ÑéÖ¤£¬Ö»ÄÜÔÚÓÐÏÞ·¶Î§ÄÚÖ¤Ã÷ÕýÈ·°ÕÁË
*
* ûÓÐ˼¿¼¼ÛÖµ´¿´âÁеÈʽ¡£¹ÊÌø¹ý¡£
*/
/**
* 79¡£Ëæ»úÊýÇóπÔ²ÖÜÂÊ
*/
public void getPaiByRandom79() {
double all = 10000000;
double l = 1000000;
double pai = 0;
double in = 0;
double x = 0, y = 0;
for (int i = 0; i < all; i++) {
x = (Math.random() * l);
y = (Math.random() * l);
if (x * x + y * y < l * l)
in++;
}
pai = (in / all * 4);
System.out.println("Times/All=" + in + "/" + all + " pai~=" + pai);
}
/**
* 76.СÃ÷ÂòÊé
*
* Êä³ö7.9+7.2ʱ»á³öÏÖСβ°Í£¬Ô­Òò²»Ã÷£¬ÏÖÔÚ¶ÏÍøÔݲ»É
*/
public voi