跪求JAVA代碼三葉玫瑰線(xiàn) r=asin3θ或r=acos3θ。謝謝

三葉玫瑰并不是植物，你也說(shuō)啦，是專(zhuān)門(mén)研究數(shù)學(xué)的。其實(shí)是一種三葉玫瑰線(xiàn)的 java代碼

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S 3：

輸入下面程序用于輸出三葉玫瑰線(xiàn)的圖形，三葉玫瑰線(xiàn)的參數(shù)方程為：

x = r * sin(3t)* sin(t);y = r *sin(3t) * sin(t) 其中: 0 = t = 2 * 3.14159

#include stdio.h

#include math.h

#define RADIUS 12

#define PII 3.14159

void main(void)

{

char tx[2 * RADIUS + 1][2 * RADIUS + 1];

int nT;

int nX;

int nY;

double dbD;

for(nX = 0; nX 2 * RADIUS + 1; nX++)

{

for(nY = 0; nY 2 * RADIUS + 1; nY++)

{

tx[nX][nY] = '';

}

}

for(nT = 0; nT = 360; nT += 4)

{

dbD = nT * PII / 180;

nX = (int)(RADIUS * sin(3 * dbD) * sin(dbD)) + RADIUS;

nY = (int)(RADIUS * sin(3 * dbD) * cos(dbD)) + RADIUS;

tx[nX][nY] = '*';

}

for(nX = 0; nX 2 * RADIUS + 1; nX++)

{

for(nY = 0; nY 2 * RADIUS + 1; nY++)

{

printf("%2c", tx[nX][nY]);

}

printf("\n");

}

}

一個(gè)JAVA程序，畫(huà)一個(gè)三葉玫瑰線(xiàn)，再添加按鈕來(lái)打開(kāi)顏色選擇器，自己寫(xiě)的代碼無(wú)法成功實(shí)現(xiàn)，求大神幫忙。

你的三葉玫瑰線(xiàn)程序我?guī)湍愀耐炅?，你看看吧?/p>

import?java.awt.*;

import?java.awt.event.*;

import?javax.swing.*;

import?java.util.ArrayList;

import?java.util.List;

public?class?GraExp4?extends?JFrame{

Container?J;

JButton?btn=new?JButton("選擇顏色");

Color?color=new?Color(200,200,200);

JPanel?jp=new?JPanel();

MyJPanel?mjp=new?MyJPanel();

public?GraExp4()

{

super("三葉玫瑰線(xiàn)");

J=getContentPane();

jp.setBackground(Color.WHITE);

jp.add(btn);

J.add(jp,BorderLayout.NORTH);

J.add(mjp,BorderLayout.CENTER);

btn.addActionListener(new?ActionListener(){?

public?void?actionPerformed(ActionEvent?e)

{

color=JColorChooser.showDialog(null,"請(qǐng)選擇你喜歡的顏色",color);

if?(color==null)?color=Color.lightGray;

mjp.setForeground(color);

mjp.repaint();?

}

});

setSize(450,?550);//設(shè)置窗口大小

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//設(shè)置一個(gè)默認(rèn)的關(guān)閉操作，點(diǎn)擊按鈕時(shí)，退出程序。

setLocationRelativeTo(null);

setVisible(true);

}

public?static?void?main(String[]?args)

{

GraExp4?ge=new?GraExp4();

}

class?MyJPanel?extends?JPanel?implements?ComponentListener{

int?roses=3;

MyJPanel(){

this.setBackground(Color.WHITE);

}

@Override

public?void?paint(Graphics?g){

super.paint(g);

int?x0,?y0;?

x0?=?this.getWidth()?/?2;?

y0?=?this.getHeight()?/?2;?

g.setColor(Color.RED);?

g.drawLine(x0,?0,?x0,?y0?*?2);?

g.drawLine(0,?y0,?x0?*?2,?y0);?

ListInteger?listx=new?ArrayListInteger();

ListInteger?listy=new?ArrayListInteger();

g.setColor(color);?

for(int?j=0;j200;j+=20)

for?(int?i?=?0;?i??1024;?i++)?{?

double?angle?=?i?*?Math.PI?/?512;?

double?radius?=?j*Math.sin(roses?*?angle);?

int?x?=?(int)?Math.round(radius?*?Math.cos(angle));?

int?y?=?(int)?Math.round(radius?*?Math.sin(angle));

listx.add(x0+x);

listy.add(y0+y);

}?

for?(int?i?=?0;?i??listx.size()-1;?i++)?{

g.drawLine(listx.get(i),listy.get(i),?listx.get(i+1),?listy.get(i+1));

}

}

@Override

public?void?componentHidden(ComponentEvent?arg0)?{}

@Override

public?void?componentMoved(ComponentEvent?arg0)?{}

@Override

public?void?componentResized(ComponentEvent?arg0)?{

repaint();

}

@Override

public?void?componentShown(ComponentEvent?arg0)?{}

}

}

運(yùn)行結(jié)果：

JAVA編程，玫瑰2元一支，百合3元一支，菊花5元一支，康乃馨6元一支，20元正好花完沒(méi)種各多少支

public?static?void?main(String[]?args)?{

for(int?m?=?0;m=10;m++)?{//玫瑰,全買(mǎi),對(duì)多買(mǎi)10只

for(int?b?=?0;b=7;b++)?{//百合,全買(mǎi),對(duì)多買(mǎi)7只

for(int?j?=?0;j=4;j++)?{//菊花全買(mǎi),對(duì)多買(mǎi)4只

for(int?k?=?0;k=4;k++)?{//康乃馨全買(mǎi),對(duì)多買(mǎi)4只

int?total?=?2*m+3*b+5*j+6*k;

if(20==total)?{

System.out.println("玫瑰買(mǎi)"+m+"支,百合買(mǎi)"+b+"支,菊花買(mǎi)"+j+"支,康乃馨買(mǎi)"+k+"支");

}

}

}

}

}

}

求個(gè)小代碼，一打開(kāi)全屏幕就是玫瑰花飄飄的，過(guò)幾秒后就現(xiàn)在中秋快樂(lè)。

java jsp的啊

第一個(gè)：把如下代碼加入body區(qū)域中，設(shè)置文字的話(huà)你自己弄吧

style

.drop { position: absolute; width: 3; filter: flipV(), flipH(); font-size: 40; color: blue }

/style

script language="javascript"

snow = false; // false-rain; true-snow

snowsym = " * " //These are the symbols for each

rainsym = " * " //You can put images here.

howmany = 15 //How many drops/snowflakes?

/**************Do not need to change anything below***********/

if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}

else{sym = rainsym; speed=50; drops=howmany; angle=6}

movex = -speed/angle; movey = speed; count = 0;

function moverain(){

for(move = 0; move drops; move++){

xx[move]+=movex; yy[move]+=mv[move];

hmm = Math.round(Math.random()*1);

if(xx[move] 0){xx[move] = maxx+10;}

if(yy[move] maxy){yy[move] = 10;}

drop[move].left = xx[move]

drop[move].top = yy[move]+document.body.scrollTop;

}setTimeout('moverain()','1')}

/script

script language="javascript"

if (document.all){

drop = new Array(); xx = new Array(); yy = new Array(); mv = new Array()

ly = "document.all[\'"; st = "\'].style"

for(make = 0; make drops; make++){

document.write('div id="drop'+make+'" class=drop'+sym+'/div');

drop[make] = eval(ly+'drop'+make+st);

maxx = document.body.clientWidth-40

maxy = document.body.clientHeight-40

xx[make] = Math.random()*maxx;

yy[make] = -100-Math.random()*maxy;

drop[make].left = xx[make]

drop[make].top = yy[make]

mv[make] = (Math.random()*5)+speed/16;

drop[make].fontSize = (Math.random()*10)+20;

if(snow){col = 'white'}else{col = 'blue'}

drop[make].color = col;

}

window.onload=moverain

}

/script

第二種：建議你用這個(gè)，你可以在加幾個(gè)圖片

腳本說(shuō)明:

第一步:把如下代碼加入body區(qū)域中

script language="JavaScript"

!--

Pic=new Array('photo/04261.gif','photo/04262.gif','photo/04263.gif','photo/04264.gif','photo/04265.gif')

//Smoothness of animation depends on the number of images and they're file size.

MaxSpeed=5;

MinSpeed=2;

load = new Array()

for(i=0; i Pic.length; i++)

{

load[i] = new Image();

load[i].src = Pic[i];

}

amount=Pic.length;

ns=(document.layers)?1:0;

if (ns){

for (i=0; i amount; i++){

document.write("LAYER NAME='netscape"+i+"' LEFT=0 TOP=0img name='netpics' src="+load[i].src+"/LAYER")}

}

else{

document.write("div style='position:absolute;top:0px;left:0px'div style='position:relative'");

for (i=0; i amount; i++){

document.write("img id='explorer' src='"+load[i].src+"' style='position:absolute;top:0px;left:0px'")}

document.write("/div/div")

}

VB=0;

HB=0;

R=new Array();

PB=new Array();

RD=new Array();

Y=new Array();

X=new Array();

D=new Array();

SP=new Array();

BY=new Array();

BX=new Array();

for (i=0; i amount; i++){

Y[i]=10;

X[i]=10;

D[i]=Math.floor(Math.random()*70+10);

SP[i]=Math.floor(Math.random()*MaxSpeed+MinSpeed);

}

function Curve(){

plusMinus=new Array(1,-1,2,-2,3,-3,0,1,-1,0,5,-5)

for (i=0; i amount; i++){

R[i]=Math.floor(Math.random()*plusMinus.length);

RD[i]=plusMinus[R[i]];

}

setTimeout('Curve()',1500);

}

function MoveRandom(){

var H=(document.layers)?window.innerHeight:document.body.clientHeight;

var W=(document.layers)?window.innerWidth:document.body.clientWidth;

var YS=(document.layers)?window.pageYOffset:document.body.scrollTop;

var XS=(document.layers)?window.pageXOffset:document.body.scrollLeft;

for (i=0; i amount; i++){

BY[i]=-load[i].height;

BX[i]=-load[i].width;

PB[i]=D[i]+=RD[i];

y = SP[i]*Math.sin(PB[i]*Math.PI/180);

x = SP[i]*Math.cos(PB[i]*Math.PI/180);

if (D[i] 0) D[i]+=360;

Y[i]+=y;

X[i]+=x;

VB=180-D[i];

HB=0-D[i];

//Corner rebounds! not necessary but looks nice.

if ((Y[i] 1) (X[i] 1)) {Y[i]=1;X[i]=1;D[i]=45;}

if ((Y[i] 1) (X[i] W+BX[i])) {Y[i]=1;X[i]=W+BX[i];D[i]=135;}

if ((Y[i] H+BY[i]) (X[i] 1)) {Y[i]=H+BY[i];X[i]=1;D[i]=315;}

if ((Y[i] H+BY[i]) (X[i] W+BX[i])) {Y[i]=H+BY[i];X[i]=W+BX[i];D[i]=225;}

//Edge rebounds!

if (Y[i] 1) {Y[i]=1;D[i]=HB;}

if (Y[i] H+BY[i]) {Y[i]=H+BY[i];D[i]=HB;}

if (X[i] 1) {X[i]=1;D[i]=VB;}

if (X[i] W+BX[i]) {X[i]=W+BX[i];D[i]=VB;}

var layer=(document.layers)?document.layers['netscape'+i]:explorer[i].style;

layer.top=Y[i]+YS;

layer.left=X[i]+XS;

}

setTimeout('MoveRandom()',10);

}

function sTaRt(){Curve();MoveRandom()}

//--

/script

第二步:

把如下代碼加入body區(qū)域中body bgcolor="#ffffff" onLoad="if (document.all||document.layers) sTaRt()"

第三個(gè)：這個(gè)是文字的顯示，你自己決定采用上面那個(gè)后加進(jìn)去

腳本說(shuō)明:

第一步:把如下代碼加入body區(qū)域中

script LANGUAGE="JavaScript"

function init() {

setTimeout("shake(3)",1000);

// setTimeout("this.focus()",4000);

setTimeout("shake(3)",4100);

}

function shake(n) {

if (self.moveBy) {

for (i = 10; i 0; i--) {

for (j = n; j 0; j--) {

self.moveBy(0,i);

self.moveBy(i,0);

self.moveBy(0,-i);

self.moveBy(-i,0);

}

}

}

setTimeout("shake(5)", 5000);

}

/script

script language="JavaScript"

!-- begin

var max=0;

function textlist()

{

max=textlist.arguments.length;

for (i=0; imax; i++)

this[i]=textlist.arguments[i];

}

tl=new textlist

(

"李鵬會(huì)見(jiàn)安得拉邦首席部長(zhǎng)奈杜",

"述評(píng):發(fā)展新世紀(jì)睦鄰友好合作關(guān)系",

"我國(guó)外匯儲(chǔ)備已達(dá)一千六百五十六億美元 ",

"人民日?qǐng)?bào)18日社論：推進(jìn)新的農(nóng)業(yè)科技革命 ",

"“神舟二號(hào)”飛船軌道艙留軌繼續(xù)進(jìn)行空間科學(xué)探測(cè)試驗(yàn)",

"聯(lián)合國(guó)證實(shí)貧鈾彈含有鈾－236",

"羅伯遜稱(chēng)北約將繼續(xù)東擴(kuò)",

"巴方指責(zé)以色列暗殺其高級(jí)官員 ",

"亞太議會(huì)論壇第九屆年會(huì)在智利開(kāi)幕",

"專(zhuān)電：布什宣誓就職典禮準(zhǔn)備就緒",

"專(zhuān)電：布什宣誓就職典禮準(zhǔn)備就緒 "

);

var x=0; pos=0;

var l=tl[0].length;

function textticker()

{

document.tickform.tickfield.value=tl[x].substring(0,pos)+"_";

if(pos++==l)

{

pos=0;

setTimeout("textticker()",1000);

x++;

if(x==max) x=0; l=tl[x].length;

}

else

setTimeout("textticker()",50);

}

// end --

/script

form name="tickform"input type=text name="tickfield" size=33/form

第二步:把如下代碼加入body區(qū)域中body bgcolor=#000000" onload="init();textticker()"

能把你的就這么多了 看你的了

求大神幫忙用*打印出一朵玫瑰，或者代碼都行（JAVA）

沒(méi)看懂你的需求，cmd控制臺(tái)運(yùn)行class很簡(jiǎn)單，要在哪展示玫瑰花呢？txt？瀏覽器頁(yè)面？cmd窗口？

玫瑰花是用字符串拼接的？還是img圖片類(lèi)型？ 需求不一樣難度也不一樣哦