包含java算24点编程代码的词条

一个java面试题：计算24点游戏 编程

import java.util.Random;

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public class test2

{

public static void main(String[] args)

{

Random random = new Random();

int a[] = new int[4];

for(int i=0; i4; i++)

{

a[i] = random.nextInt(13)+1;

}

for(int j=0; j4; j++)

{

System.out.println("第" + j +"个数：" + a[j]);

}

Calcula(a);

}

public static void Calcula(int[] a)

{

int add, sub, multi, div;

add = 0;

sub = 0;

multi = 0;

div = 0;

for(int i=0; i4; i++)

{

add = add + a[i];

sub = sub - a[i];

multi = multi * a[i];

div = div/a[i];

}

if(add==24)

{

System.out.println(a[0] + "+" + a[1] + "+" + a[2] + "+" + a[3]

+ "=" + add);

}

else if(sub==24)

{

System.out.println(a[0] + "-" + a[1] + "-" + a[2] + "-" + a[3]

+ "=" + sub);

}

else if(multi==24)

{

System.out.println(a[0] + "*" + a[1] + "*" + a[2] + "*" + a[3]

+ "=" + multi);

}

else if(div==24)

{

System.out.println(a[0] + "÷" + a[1] + "÷" + a[2] + "÷" + a[3]

+ "=" + div);

}

else

{

System.out.println("对不起，没有实现24点的数");

}

}

}

已编译通过~

Java24点

粗略看了下，至少发现三个BUG:

1.没有考虑int类型相除时是否整除的问题，如3/4在你的算法中直接以零作为计算结果；

2.如果前两个或前三个数计算结果已经为24，则直接输出，没有等到四个全部参与计算；

3.类似n == 24.0这种浮点数的相等判断在绝大多数计算机语言中都是不正确的。

算24点 java代码

C的代码要吗？我对java不是很熟，我试着用java写下吧。给我点时间！

package test.cardgame;

public class BinaryTreeNode

{

private BinaryTreeNode leftSon=null;

private BinaryTreeNode rightSon=null;

private BinaryTreeNode parent=null;

private double data=0;

private int sign=-1;

public int getSign()

{

return sign;

}

public void setSign(int sign)

{

this.sign = sign;

}

public BinaryTreeNode(BinaryTreeNode parent,BinaryTreeNode leftSon,BinaryTreeNode rightSon)

{

this.parent=parent;

this.leftSon=leftSon;

this.rightSon=rightSon;

}

public BinaryTreeNode()

{

}

public BinaryTreeNode getLeftSon()

{

return leftSon;

}

public void setLeftSon(BinaryTreeNode leftSon)

{

this.leftSon = leftSon;

leftSon.setParent(this);

}

public BinaryTreeNode getParent()

{

return parent;

}

public void setParent(BinaryTreeNode parent)

{

this.parent = parent;

}

public BinaryTreeNode getRightSon()

{

return rightSon;

}

public void setRightSon(BinaryTreeNode rightSon)

{

this.rightSon = rightSon;

rightSon.setParent(this);

}

public boolean isLeaf()

{

return (this.leftSon==nullthis.rightSon==null);

}

public boolean isRoot()

{

return this.parent==null;

}

public double getData()

{

return data;

}

public void setData(double data)

{

this.data = data;

}

}

package test.cardgame;

import java.util.ArrayList;

public class CardGame

{

private ArrayListString expressions=new ArrayListString();

public void solute(ArrayListBinaryTreeNode nodes,double target)

{

//whether the root data equals target

if (nodes.size()==1)

{

if (nodes.get(0).getData()==target)

{

String expression=printBinaryTree(nodes.get(0));

addExpression(expression);

return;

}

}

for (int i=0;inodes.size();i++)

{

for (int j=0;jnodes.size();j++)

{

if (i==j)

{

continue;

}

for (int k=0;k4;k++)

{

BinaryTreeNode node=new BinaryTreeNode();

BinaryTreeNode leftSon=nodes.get(i);

BinaryTreeNode rightSon=nodes.get(j);

if (k==0)

{

node.setData(leftSon.getData()+rightSon.getData());

}

else if (k==1)

{

node.setData(leftSon.getData()-rightSon.getData());

}

else if (k==2)

{

node.setData(leftSon.getData()*rightSon.getData());

}

else if (k==3)

{

if (rightSon.getData()==0)

{

continue;

}

node.setData(leftSon.getData()/rightSon.getData());

}

node.setLeftSon(leftSon);

node.setRightSon(rightSon);

node.setSign(k);

ArrayListBinaryTreeNode clonedArrayList=cloneArrayList(nodes);

//remove nodes from the tree

clonedArrayList.remove(leftSon);

clonedArrayList.remove(rightSon);

clonedArrayList.add(node);

solute(clonedArrayList,target);

}

}

}

}

public void printResult()

{

for (int i=0;iexpressions.size();i++)

{

System.out.println("Solution "+i+": "+expressions.get(i));

}

}

private void addExpression(String expression)

{

if (expressions.contains(expression))

{

return;

}

expressions.add(expression);

}

private ArrayListBinaryTreeNode cloneArrayList(ArrayListBinaryTreeNode source)

{

ArrayListBinaryTreeNode result=new ArrayListBinaryTreeNode();

for (int i=0;isource.size();i++)

{

result.add(source.get(i));

}

return result;

}

private String printBinaryTree(BinaryTreeNode resultRoot)

{

if (resultRoot.isLeaf())

{

return doubleToString(resultRoot.getData());

}

else

{

String expression="(";

expression+=printBinaryTree(resultRoot.getLeftSon());

int sign=resultRoot.getSign();

if (sign==0)

{

expression+="+";

}

else if (sign==1)

{

expression+="-";

}

else if (sign==2)

{

expression+="*";

}

else if (sign==3)

{

expression+="/";

}

expression+=printBinaryTree(resultRoot.getRightSon());

expression+=")";

return expression;

}

}

private String doubleToString(double value)

{

int intValue=(int)value;

if (value==intValue)

{

return String.valueOf(intValue);

}

else

{

return String.valueOf(value);

}

}

public BinaryTreeNode buildBinaryTreeNode(double value)

{

BinaryTreeNode node=new BinaryTreeNode();

node.setData(value);

return node;

}

public static void main(String[] args)

{

CardGame cardGame=new CardGame();

ArrayListBinaryTreeNode nodes=new ArrayListBinaryTreeNode();

nodes.add(cardGame.buildBinaryTreeNode(4));

nodes.add(cardGame.buildBinaryTreeNode(6));

nodes.add(cardGame.buildBinaryTreeNode(1));

nodes.add(cardGame.buildBinaryTreeNode(1));

cardGame.solute(nodes, 24);

cardGame.printResult();

}

}

java算24点代码：输入4个数算24点，能够在命令提示符下就可以运行。100多

import java.util.Scanner;

/** 给定4个数字计算24 */

public class Core {

private double expressionResult = 24;

// private int maxLine=10;

private boolean error = true;

private double numbers[] = new double[4];

public Object resultReturn;

/**

* 该对象拥有3个私有变量 expressionResult,所需结果 maxLine,输出结果每页行数 error,是否出错

* numbers[4],记录用来运算的4个数

*

* 其次,该对象拥有以下方法供外部调用 setNumbers(double[] 运算的数) 输入用来运算的数,4个时才能计算,无返回

* setMaxLine(int 行数) 输入每页的行数,无返回 getMaxLine() 返回每页的行数,类型为int

* setExpressionResult(double 所需结果) 输入所需结果,无返回 getExpressionResult()

* 返回所需结果,类型为double getExpression() 返回可得出所需结果的表达式,类型为字符串数组

*

* 最后,私有方法均为计算与表达式转换部分

*/

// 测试使用

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

int[] arr = new int[4];

System.out.print("输入第一个数：");

arr[0] = scanner.nextInt();

System.out.print("输入第二个数：");

arr[1] = scanner.nextInt();

System.out.print("输入第三个数：");

arr[2] = scanner.nextInt();

System.out.print("输入第四个数：");

arr[3] = scanner.nextInt();

Core s = new Core();

s.setNumbers(arr);

String[] output = s.getExpression();

for (int i = 0; i output.length; i++) {

System.out.println(output[i]);

}

}

/** 设定被计算的四个数，由于是数组，所以具有容错功能(不为4个数) */

public void setNumbers(double[] n) {

if (n.length == 4) {

error = false;

numbers = n;

} else

error = true;

}

public void setNumbers(int[] n) {

if (n.length == 4) {

error = false;

for (int i = 0; i 4; i++) {

numbers[i] = n[i];

}

} else

error = true;

}

/** 设定每页显示的行数 */

// public void setMaxLine(int n) {

// if (n0) {

// maxLine=n;

// }

// }

// /** 返回每页显示的行数 */

// public int getMaxLine() {

// return maxLine;

// }

/** 设定需要得到的结果 */

public void setExpressionResult(double n) {

expressionResult = n;

}

/** 返回所需结果 */

public double expressionResult() {

return expressionResult;

}

/** 返回符合条件的表达式 */

public String[] getExpression() {

if (!error) {

String[] expression = calculate(numbers);

return expression;

} else

return new String[] { "出错了,输入有误" };

}

/** cal24()，输出结果为24的表达式 */

private String[] calculate(double[] n) {

if (n.length != 4)

return new String[] { "Error" };

double[] n1 = new double[3];

double[] n2 = new double[2];

String[] resultString = new String[1024]; // 最多1000组解,暂时未溢出

int count = 0;

boolean isRepeat = false;

for (int t1 = 0; t1 6; t1++) {

for (int c1 = 0; c1 6; c1++) {

for (int t2 = 0; t2 3; t2++) {

for (int c2 = 0; c2 6; c2++) {

for (int c3 = 0; c3 6; c3++) {

if ((c1 / 3 == c2 / 3 (c1 % 3) * (c2 % 3) != 0)

|| (c2 / 3 == c3 / 3 (c2 % 3) * (c3 % 3) != 0)

|| (c1 / 3 == c3 / 3

(c1 % 3) * (c3 % 3) != 0 t2 == 2)) {

// 去除连减连除的解,因为x/(y/z)=x*z/y

continue;

}

n1 = cal1(n, t1, c1);

n2 = cal2(n1, t2, c2);

double result = cal(n2[0], n2[1], c3);

if ((result - expressionResult) 0.00000001

(expressionResult - result) 0.00000001) {

resultString[count] = calString(n, t1, c1, t2,

c2, c3)

+ "=" + (int) expressionResult;

for (int i = 0; i count; i++) {

isRepeat = false;

if (resultString[i]

.equals(resultString[count])) { // 去除完全重复的解

isRepeat = true;

break; // 提前退出循环

}

}

if (c1 == c2 c2 == c3 c1 % 3 == 0

t1 + t2 != 0) { // 连加连乘

isRepeat = true;

}

if (!isRepeat) {

count++;

}

}

}

}

}

}

}

if (count == 0)

return new String[] { "该组数无解" };

String[] resultReturn = new String[count];

System.arraycopy(resultString, 0, resultReturn, 0, count);

return resultReturn;

}

/** cal1()，将4个数计算一次后返回3个数 */

private double[] cal1(double[] n, int t, int c) { // t为原来的t1，c为原来的c1

double[] m = new double[3];

switch (t) {

case 0:

m[1] = n[2];

m[2] = n[3];

m[0] = cal(n[0], n[1], c);

break;

case 1:

m[1] = n[1];

m[2] = n[3];

m[0] = cal(n[0], n[2], c);

break;

case 2:

m[1] = n[1];

m[2] = n[2];

m[0] = cal(n[0], n[3], c);

break;

case 3:

m[1] = n[0];

m[2] = n[3];

m[0] = cal(n[1], n[2], c);

break;

case 4:

m[1] = n[0];

m[2] = n[2];

m[0] = cal(n[1], n[3], c);

break;

default:

m[1] = n[0];

m[2] = n[1];

m[0] = cal(n[2], n[3], c);

}

return m;

}

/** cal2()，将3个数计算一次后返回2个数 */

private double[] cal2(double[] n, int t, int c) { // t为原来的t2，c为原来的c2

double[] m = new double[2];

switch (t) {

case 0:

m[1] = n[2];

m[0] = cal(n[0], n[1], c);

break;

case 1:

m[1] = n[1];

m[0] = cal(n[0], n[2], c);

break;

default:

m[1] = n[0];

m[0] = cal(n[1], n[2], c);

}

return m;

}

/** cal()，将2个数计算后返回结果 */

private double cal(double n1, double n2, int c) { // n1,n2为运算数，c为运算类型

switch (c) {

case 0:

return n1 + n2;

case 1:

return n1 - n2;

case 2:

return n2 - n1;

case 3:

return n1 * n2;

case 4:

if (n2 == 0)

return 9999; // 使计算结果必不为24

else

return n1 / n2;

default:

if (n1 == 0)

return 9999; // 同上

else

return n2 / n1;

}

}

/** calString()，输出表达式 */

private String calString(double[] n, int t1, int c1, int t2, int c2, int c3) {

String[] nString = new String[4];

switch (t1) {

case 0:

nString[0] = calString2("" + (int) n[0], "" + (int) n[1], c1);

nString[1] = "" + (int) n[2];

nString[2] = "" + (int) n[3];

break;

case 1:

nString[0] = calString2("" + (int) n[0], "" + (int) n[2], c1);

nString[1] = "" + (int) n[1];

nString[2] = "" + (int) n[3];

break;

case 2:

nString[0] = calString2("" + (int) n[0], "" + (int) n[3], c1);

nString[1] = "" + (int) n[1];

nString[2] = "" + (int) n[2];

break;

case 3:

nString[0] = calString2("" + (int) n[1], "" + (int) n[2], c1);

nString[1] = "" + (int) n[0];

nString[2] = "" + (int) n[3];

break;

case 4:

nString[0] = calString2("" + (int) n[1], "" + (int) n[3], c1);

nString[1] = "" + (int) n[0];

nString[2] = "" + (int) n[2];

break;

default:

nString[0] = calString2("" + (int) n[2], "" + (int) n[3], c1);

nString[1] = "" + (int) n[0];

nString[2] = "" + (int) n[1];

}

if ((c2 / 3 c1 / 3 (t2 != 2 || c2 / 3 == c3 / 3))

|| ((c3 / 3 c1 / 3 + c2 / 3) t2 == 2)

|| (c3 == 1 c1 / 3 == 0)) // 特定情况下加上一个括号*****************************

nString[0] = '(' + nString[0] + ')';

switch (t2) {

case 0:

nString[0] = calString2(nString[0], "" + nString[1], c2);

nString[1] = nString[2];

break;

case 1:

nString[0] = calString2(nString[0], nString[2], c2);

break;

default:

nString[3] = nString[0];

nString[0] = calString2(nString[1], nString[2], c2);

nString[1] = nString[3];

}

if (c3 / 3 c2 / 3 || (c3 == 2 nString[0].indexOf('+') = 0)) // 特定情况下加上一个括号*****************************

nString[0] = '(' + nString[0] + ')';

return calString2(nString[0], nString[1], c3);

}

/** calString()，根据符号输出一部运算表达式 */

private String calString2(String n1, String n2, int c) {

switch (c) {

case 0:

return n1 + '+' + n2;

case 1:

return n1 + '-' + n2;

case 2:

return n2 + '-' + n1;

case 3:

return n1 + '*' + n2;

case 4:

return n1 + '/' + n2;

default:

return n2 + '/' + n1;

}

}

}

求 JAVA 算24点的代码

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

public class calculate24 extends JFrame{

private javax.swing.JPanel jContentPane = null;

private JLabel jLabel = null;

private JLabel jLabel1 = null;

private JTextField jTextField = null;

private JTextField jTextField1 = null;

private JTextArea jTextArea = null;

private JLabel jLabel2 = null;

private JButton jButton = null;

private JScrollPane jScrollPane = null;

private JButton jButton1 = null;

private JButton jButton2 = null;

private JButton jButton3 = null;

private JButton jButton4 = null;

private JButton jButton5 = null;

private JButton jButton6 = null;

private JButton jButton7 = null;

private JButton jButton8 = null;

private JButton jButton9 = null;

private JButton jButton10 = null;

/**

* This is the default constructor

*/

public calculate24() {

super();

initialize();

}

/**

* This method initializes this

*

* @return void

*/

private void initialize() {

this.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);

this.setBounds(200, 200, 565, 452);

this.setContentPane(getJContentPane());

this.setTitle("24点");

}

/**

* This method initializes jContentPane

*

* @return javax.swing.JPanel

*/

private javax.swing.JPanel getJContentPane() {

if (jContentPane == null) {

jLabel2 = new JLabel();

jLabel1 = new JLabel();

jLabel = new JLabel();

jContentPane = new javax.swing.JPanel();

jContentPane.setLayout(null);

jLabel.setBounds(66, 52, 150, 45);

jLabel.setText("please unter four number");

jLabel1.setBounds(253, 52, 282, 45);

jLabel1.setText("please unter how many result do you want to get");

jLabel2.setBounds(354, 201, 70, 36);

jLabel2.setText("result");

jContentPane.add(getJButton(), null);

jContentPane.add(jLabel, null);

jContentPane.add(jLabel1, null);

jContentPane.add(getJTextField(), null);

jContentPane.add(getJTextField1(), null);

jContentPane.add(jLabel2, null);

jContentPane.add(getJScrollPane(), null);

jContentPane.add(getJButton1(), null);

jContentPane.add(getJButton2(), null);

jContentPane.add(getJButton3(), null);

jContentPane.add(getJButton4(), null);

jContentPane.add(getJButton5(), null);

jContentPane.add(getJButton6(), null);

jContentPane.add(getJButton7(), null);

jContentPane.add(getJButton8(), null);

jContentPane.add(getJButton9(), null);

jContentPane.add(getJButton10(), null);

}

return jContentPane;

}

/**

* This method initializes jTextField

*

* @return javax.swing.JTextField

*/

private JTextField getJTextField() {

if (jTextField == null) {

jTextField = new JTextField();

jTextField.setBounds(67, 84, 149, 41);

jTextField.addFocusListener(new java.awt.event.FocusAdapter() {

public void focusGained(java.awt.event.FocusEvent e) {

jTextField.select(0,jTextField.getText().length());

}

});

}

return jTextField;

}

/**

* This method initializes jTextField1

*

* @return javax.swing.JTextField

*/

private JTextField getJTextField1() {

if (jTextField1 == null) {

jTextField1 = new JTextField();

jTextField1.setBounds(293, 81, 161, 41);

jTextField1.setNextFocusableComponent(jButton);

}

return jTextField1;

}

/**

* This method initializes jTextArea

*

* @return javax.swing.JTextArea

*/

private JTextArea getJTextArea() {

if (jTextArea == null) {

jTextArea = new JTextArea();

jTextArea.setTabSize(8);

}

return jTextArea;

}

public static String bbb(List list1, List list2) {

float result = 0;

for (int i = list1.size(); i 0; i-- ) {

if (list1.contains("*")) {

int j = list1.indexOf("*");

result = Float.parseFloat((String)list2.get(j))

* Float.parseFloat((String)list2.get(j + 1));

list1.remove(j);

list2.remove(j);

list2.remove(j);

list2.add(j, String.valueOf(result));

} else if (list1.contains("/")) {

int j = list1.indexOf("/");

result = Float.parseFloat((String)list2.get(j))

/ Float.parseFloat((String)list2.get(j + 1));

list1.remove(j);

list2.remove(j);

list2.remove(j);

list2.add(j, String.valueOf(result));

} else if (list1.contains("+")) {

int j = list1.indexOf("+");

result = Float.parseFloat((String)list2.get(j))

+ Float.parseFloat((String)list2.get(j + 1));

list1.remove(j);

list2.remove(j);

list2.remove(j);

list2.add(j, String.valueOf(result));

} else if (list1.contains("-")) {

int j = list1.indexOf("-");

result = Float.parseFloat((String)list2.get(j))

- Float.parseFloat((String)list2.get(j + 1));

list1.remove(j);

list2.remove(j);

list2.remove(j);

list2.add(j, String.valueOf(result));

}

}

return (String)list2.get(0);

}

private static void bbb(String str, String sPrint, List list) {

if (!"".equals(str.trim()) ? false : list.add(sPrint))

;

for (int i = 0; i str.length() ( !"".equals(str.trim()) ); i++ )

if (str.charAt(i) != ' ')

bbb(str.replace(str.charAt(i), ' '), sPrint + str.charAt(i),

list);

}

private static List bbb(String str, List list) {

List result = new ArrayList();

String a1 = str.substring(0, 1);

String b1 = str.substring(1, 2);

String c1 = str.substring(2, 3);

String d1 = str.substring(3, 4);

String[] a11 = new String[] { a1, b1, c1, d1 };

for (int i = 0; i list.size(); i++ ) {

String temp = (String)list.get(i);

int a = Integer.parseInt(temp.substring(0, 1));

int b = Integer.parseInt(temp.substring(1, 2));

int c = Integer.parseInt(temp.substring(2, 3));

int d = Integer.parseInt(temp.substring(3, 4));

String tempStr = a11[a] + a11[b] + a11[c] + a11[d];

if(!result.contains(tempStr)){

result.add(tempStr);

}

}

return result;

}

public List test(String param, int x) {

int y = 0;

List result = new ArrayList();

List a11 = new ArrayList();

calculate24.bbb("0123", "", a11);

List a1 = calculate24.bbb(param, a11);

for (int m = 0; m a1.size(); m++ ) {

String param1 = (String)a1.get(m);

int[] a = new int[] { Integer.parseInt(param1.substring(0, 1)),

Integer.parseInt(param1.substring(1, 2)),

Integer.parseInt(param1.substring(2, 3)),

Integer.parseInt(param1.substring(3, 4)) };

String[] e = new String[] { "*", "/", "+", "-" };

for (int i = 0; i 4; i++ ) {

for (int j = 0; j 4; j++ ) {

for (int k = 0; k 4; k++ ) {

List aa = new ArrayList();

aa.add(String.valueOf(a[0]));

aa.add(String.valueOf(a[1]));

aa.add(String.valueOf(a[2]));

aa.add(String.valueOf(a[3]));

List bb = new ArrayList();

bb.add(e[i]);

bb.add(e[j]);

bb.add(e[k]);

String s = a[0] + e[i] + a[1] + e[j] + a[2] + e[k]

+ a[3];

String tempS = s;

s = calculate24.bbb(bb, aa);

if (Float.parseFloat(s) == 24) {

y++ ;

result.add(tempS + "=24");

if (y == x) {

return result;

}

}

List temp1 = new ArrayList();

List temp2 = new ArrayList();

temp1.add(String.valueOf(a[0]));

temp1.add(String.valueOf(a[1]));

temp2.add(e[i]);

String temp = calculate24.bbb(temp2, temp1);

aa.clear();

aa.add(temp);

aa.add(String.valueOf(a[2]));

aa.add(String.valueOf(a[3]));

bb.clear();

bb.add(e[j]);

bb.add(e[k]);

s = "(" + a[0] + e[i] + a[1] + ")" + e[j] + a[2] + e[k]

+ a[3];

tempS = s;

s = calculate24.bbb(bb, aa);

if (Float.parseFloat(s) == 24) {

y++ ;

result.add(tempS + "=24");

if (y == x) {

return result;

}

}

temp1.clear();

temp2.clear();

temp1.add(String.valueOf(a[1]));

temp1.add(String.valueOf(a[2]));

temp2.add(e[j]);

temp = calculate24.bbb(temp2, temp1);

aa.clear();

aa.add(String.valueOf(a[0]));

aa.add(temp);

aa.add(String.valueOf(a[3]));

bb.clear();

bb.add(e[i]);

bb.add(e[k]);

s = a[0] + e[i] + "(" + a[1] + e[j] + a[2] + ")" + e[k]

+ a[3];

tempS = s;

s = calculate24.bbb(bb, aa);

if (Float.parseFloat(s) == 24) {

y++ ;

result.add(tempS + "=24");

if (y == x) {

return result;

}

}

temp1.clear();

temp2.clear();

temp1.add(String.valueOf(a[2]));

temp1.add(String.valueOf(a[3]));

temp2.add(e[k]);

temp = calculate24.bbb(temp2, temp1);

aa.clear();

aa.add(String.valueOf(a[0]));

aa.add(String.valueOf(a[1]));

aa.add(temp);

bb.clear();

bb.add(e[i]);

bb.add(e[j]);

s = a[0] + e[i] + a[1] + e[j] + "(" + a[2] + e[k]

+ a[3] + ")";

tempS = s;

s = calculate24.bbb(bb, aa);

if (Float.parseFloat(s) == 24) {

y++ ;

result.add(tempS + "=24");

if (y == x) {

return result;

}

}

temp1.clear();

temp2.clear();

temp1.add(String.valueOf(a[0]));

temp1.add(String.valueOf(a[1]));

temp1.add(String.valueOf(a[2]));

temp2.add(e[i]);

temp2.add(e[j]);

temp = calculate24.bbb(temp2, temp1);

aa.clear();

aa.add(temp);

aa.add(String.valueOf(a[3]));

bb.clear();

bb.add(e[k]);

s = "(" + a[0] + e[i] + a[1] + e[j] + a[2] + ")" + e[k]

+ a[3];

tempS = s;

s = calculate24.bbb(bb, aa);

if (Float.parseFloat(s) == 24) {

y++ ;

result.add(tempS + "=24");

if (y == x) {

return result;

}

}

temp1.clear();

temp2.clear();

temp1.add(String.valueOf(a[1]));

temp1.add(String.valueOf(a[2]));

temp1.add(String.valueOf(a[3]));

temp2.add(e[j]);

temp2.add(e[k]);

temp = calculate24.bbb(temp2, temp1);

aa.clear();

aa.add(String.valueOf(a[0]));

aa.add(temp);

bb.clear();

bb.add(e[i]);

s = a[0] + e[i] + "(" + a[1] + e[j] + a[2] + e[k]

+ a[3] + ")";

tempS = s;

s = calculate24.bbb(bb, aa);

if (Float.parseFloat(s) == 24) {

y++ ;

result.add(tempS + "=24");

if (y == x) {

return result;

}

}

temp1.clear();

temp2.clear();

temp1.add(String.valueOf(a[0]));

temp1.add(String.valueOf(a[1]));

temp2.add(e[i]);

temp = calculate24.bbb(temp2, temp1);

List temp3 = new ArrayList();

List temp4 = new ArrayList();

temp3.add(String.valueOf(a[2]));

temp3.add(String.valueOf(a[3]));

temp4.add(e[k]);

String temp11 = calculate24.bbb(temp4, temp3);

aa.clear();

aa.add(temp);

aa.add(temp11);

bb.clear();

bb.add(e[j]);

s = "(" + a[0] + e[i] + a[1] + ")" + e[j] + "(" + a[2]

+ e[k] + a[3] + ")";

tempS = s;

s = calculate24.bbb(bb, aa);

if (Float.parseFloat(s) == 24) {

y++ ;

result.add(tempS + "=24");

if (y == x) {

return result;

}

}

}

}

}

}

return result;

}

public static boolean check(String param1) {

Pattern pattern = Pattern.compile("[0-9]{4}");

Matcher matcher = pattern.matcher((CharSequence)param1);

boolean result = matcher.matches();

if (result == false) {

JOptionPane.showMessageDialog(null, "please enter correct number");

return false;

} else {

return true;

}

}

public static boolean check1(String param2) {

if(param2 == null){

JOptionPane.showMessageDialog(null, "please enter correct number");

return false;

}

Pattern pattern = Pattern.compile("[0-9]{0,99}");

Matcher matcher = pattern.matcher((CharSequence)param2);

boolean result = matcher.matches();

if (result == false) {

JOptionPane.showMessageDialog(null, "please enter correct number");

return false;

} else {

return true;

}

}

/**

* This method initializes jButton

*

* @return javax.swing.JButton

*/

private JButton getJButton() {

if (jButton == null) {

jButton = new JButton();

jButton.setBounds(81, 275, 110, 54);

jButton.setText("calculate");

jButton.addKeyListener(new java.awt.event.KeyAdapter() {

public void keyPressed(java.awt.event.KeyEvent e) {

if(e.getKeyCode()==10){

if (check(jTextField.getText())

check1(jTextField1.getText())) {

if(!jTextField1.getText().equals("0")){

List b = test(jTextField.getText(), Integer

.parseInt(jTextField1.getText()));

String temp = "";

for (int i = 0; i b.size(); i++ ) {

temp = temp + b.get(i) + "\n";

}

if (b.size() == 0) {

jTextArea.setText("NO RESULT");

} else {

jTextArea.setText(temp);

}

}else{

JOptionPane.showMessageDialog(null, "please enter correct number");

}

}

}

}

});

jButton.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

if (check(jTextField.getText())

check1(jTextField1.getText())) {

if(!jTextField1.getText().equals("0")){

List b = test(jTextField.getText(), Integer

.parseInt(jTextField1.getText()));

String temp = "";

for (int i = 0; i b.size(); i++ ) {

temp = temp + b.get(i) + "\n";

}

if (b.size() == 0) {

jTextArea.setText("NO RESULT");

} else {

jTextArea.setText(temp);

}

}else{

JOptionPane.showMessageDialog(null, "please enter correct number");

}

}

}

});

}

return jButton;

}

/**

* This method initializes jScrollPane

*

* @return javax.swing.JScrollPane

*/

private JScrollPane getJScrollPane() {

if (jScrollPane == null) {

jScrollPane = new JScrollPane();

jScrollPane.setBounds(267, 238, 216, 124);

jScrollPane.setViewportView(getJTextArea());

}

return jScrollPane;

}

/**

* This method initializes jButton1

*

* @return javax.swing.JButton

*/

private JButton getJButton1() {

if (jButton1 == null) {

jButton1 = new JButton();

jButton1.setBounds(40, 148, 42, 28);

jButton1.setText("1");

jButton1.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"1");

}

});

}

return jButton1;

}

/**

* This method initializes jButton2

*

* @return javax.swing.JButton

*/

private JButton getJButton2() {

if (jButton2 == null) {

jButton2 = new JButton();

jButton2.setBounds(90, 148, 42, 28);

jButton2.setText("2");

jButton2.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"2");

}

});

}

return jButton2;

}

/**

* This method initializes jButton3

*

* @return javax.swing.JButton

*/

private JButton getJButton3() {

if (jButton3 == null) {

jButton3 = new JButton();

jButton3.setBounds(140, 148, 42, 28);

jButton3.setText("3");

jButton3.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"3");

}

});

}

return jButton3;

}

/**

* This method initializes jButton4

*

* @return javax.swing.JButton

*/

private JButton getJButton4() {

if (jButton4 == null) {

jButton4 = new JButton();

jButton4.setBounds(190, 148, 42, 28);

jButton4.setText("4");

jButton4.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"4");

}

});

}

return jButton4;

}

/**

* This method initializes jButton5

*

* @return javax.swing.JButton

*/

private JButton getJButton5() {

if (jButton5 == null) {

jButton5 = new JButton();

jButton5.setBounds(240, 148, 42, 28);

jButton5.setText("5");

jButton5.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"5");

}

});

}

return jButton5;

}

/**

* This method initializes jButton6

*

* @return javax.swing.JButton

*/

private JButton getJButton6() {

if (jButton6 == null) {

jButton6 = new JButton();

jButton6.setBounds(40, 188, 42, 28);

jButton6.setText("6");

jButton6.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"6");

}

});

}

return jButton6;

}

/**

* This method initializes jButton7

*

* @return javax.swing.JButton

*/

private JButton getJButton7() {

if (jButton7 == null) {

jButton7 = new JButton();

jButton7.setBounds(90, 188, 42, 28);

jButton7.setText("7");

jButton7.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"7");

}

});

}

return jButton7;

}

/**

* This method initializes jButton8

*

* @return javax.swing.JButton

*/

private JButton getJButton8() {

if (jButton8 == null) {

jButton8 = new JButton();

jButton8.setBounds(140, 188, 42, 28);

jButton8.setText("8");

jButton8.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"8");

}

});

}

return jButton8;

}

/**

* This method initializes jButton9

*

* @return javax.swing.JButton

*/

private JButton getJButton9() {

if (jButton9 == null) {

jButton9 = new JButton();

jButton9.setBounds(190, 188, 42, 28);

jButton9.setText("9");

jButton9.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"9");

}

});

}

return jButton9;

}

/**

* This method initializes jButton10

*

* @return javax.swing.JButton

*/

private JButton getJButton10() {

if (jButton10 == null) {

jButton10 = new JButton();

jButton10.setBounds(240, 188, 42, 28);

jButton10.setText("0");

jButton10.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent e) {

jTextField.setText(jTextField.getText()+"0");

}

});

}

return jButton10;

}

/**

* Launches this application

*/

public static void main(String[] args) {

calculate24 application = new calculate24();

application.show();

}

} // @jve:decl-index=0:visual-constraint="10,10"

用JAVA如何算出24点?

24点的源代码,因该可以计算出4则运算24 public class Test24Point{ public static void main(String[] args){ int index = 0 ; int temp = 0 ; int totalSUC = 0 ; int numb[] = new int[4];//the first four numbers double num[][] = new double[36][3];//three numbers after calculating double total[] = new double[6];//the number after three steps of calculating double p[][] = new double[6][8]; double q[][] = new double[3][7]; //System.out.println(2465%108); //System.out.println(2465/108); System.out.println("\"a--b\"means\"b-a\""); System.out.println("\"a//b\"means\"b/a\"\n"); /* for(int h = 0; h = 9; h ++)//Get the first four numbers for calculating and store into the array numb[4]; for(int i = 0; i = 9; i ++) for(int j = 0; j = 9; j ++) for(int k = 0; k = 9; k ++){ numb[0] = h ; numb[1] = i ; numb[2] = j ; numb[3] = k ; }*/ for(int i = 0 ; i 4 ; i ++){ numb = Integer.parseInt(args); } for(int i = 0; i 3; i ++)//Get two of the four to calculate and then store the new number into the array p; for(int j = i + 1; j 4 ; j ++,temp ++){ p[temp][0] = numb + numb[j]; p[temp][1] = numb - numb[j]; p[temp][2] = numb[j] - numb; p[temp][3] = numb * numb[j]; if(numb[j] != 0) p[temp][4] = numb / (double)numb[j]; else p[temp][4] = 10000; if(numb != 0) p[temp][5] = numb[j] / (double)numb; else p[temp][5] = 10000;