# Java implementation Simple Gobang (although a lot of bugs, but will continue to improve)

Source: Internet
Author: User

`Import java.util.inputmismatchexception;import java.util.random;import java.util.scanner;import  javax.swing.JOptionPane;/** *  Gobang Games. For the double versus the Man-machine battle (the machine is random input, does not add to the exact algorithm) draw the situation did not make judgments.  * <p> *  on the 15*15 board, there are 572 things to win. <br> *  in a Gobang game, computers have to know what winning combinations they have, so we have to figure out the total number of winning combinations. <br> *  (1) calculates the number of winning combinations in the horizontal direction, the winning combination of each line is: 11, a total of 15 rows, so the number of winning combinations in the horizontal direction is: 11*15=165. <br> *   (2) calculates the total number of winning combinations in the vertical direction, the winning combination of each column is: 11, a total of 15 columns, so the winning combination of the vertical direction is:11*15=165.<br> *  (3) calculates the total number of winning combinations in the positive diagonal direction, The total number of winning combinations on the positive diagonal is 11+ (10+9+...+2+1) *2=121.<br> *  (4) calculates the total number of winning combinations in the counter-diagonal direction, the total number of winning combinations on the counter diagonal is 11+ (10+9+...+2+1) * 2=121.<br> *  So, the total number of victories is 165+165+121+121=572. *  *  @author  frank *  */public class NewGoBang{//  Static code block STATIC{SYSTEM.OUT.PRINTLN ("Welcome to Gobang World!") ");} public final static int size = 15; String[][] board = new string[size][size];boolean flag = true;//  creates an arbitrary random object. Random ran = new random ();/** *  draw the chessboard. "Ten"  */public void initboard () {for  (int x = 0; x <  board.length; x++) {for  (int y = 0; y < board.length; y++) { board[x][y] =  "Ten";// ╂ ,╋}}printarray (board);} /** *  determine if a piece has five consecutive . *  *  @param  row *              the horizontal axis  *  @param of chess pieces  column *              the ordinate  *  @param of chess pieces  str *              array of strings  *  @param  c *              string argument (that is, pawn)  */public void isfive (int  row, int column, String[][] str, String c) {//  transverse judgment int m, l;m = 1; l = 1;while  ((column + m)  < size && str[row][column  + m] == c) {l++;m++;} m = 1;while  ((column - m)  >= 0 && str[row][column  - m] == c) {l++;m++;} ShowMessage (l, c);//  longitudinal judgement m = 1; l = 1;while  ((row + m)  < size && str[row + m ][column] == c) {l++;m++;} m = 1;while  ((row - m)  >= 0 && str[row - m][ column] == c) {l++;m++;} ShowMessage (l, c);//  oblique judgment Italic (row, column, str, c);}   Oblique judgment Public void italic (int row, int column, string[][] str,  STRING&NBSP;C) {int l = 1;//  defines a pointer, more than five wins. int m = 1;//  Oblique judgment while  (row + m)  < size &&  (column + m)  < size&& str[row  + m][column + m] == c) {l++;m++;} m = 1;//m Reset to 1;while  ((row - m)  >= 0 &&  (column - &NBSP;M)  >= 0&& str[row - m][column - m] == c) {L++;m++ ;} ShowMessage (l, c);//  inverse oblique judgment m = 1; l = 1;while  (row + m)  < size &&  (column - m ) { >= 0&& str[row + m][column - m] == c) {L++;m++;} m = 1;//m Reset to 1;while  ((row - m)  >= 0 &&  (column + &NBSP;M)  < size&& str[row - m][column + m] == c) {L++;m ++;} ShowMessage (l, c);} Determine if it equals five public void showmessage (int point, string c) {if  (POint >= 5) {System.out.println (  "Congratulations    + c + "   Chess wins!) ")//can use the following sentence to pop up a dialog box, more beautiful.`
`Joptionpane.showmessagedialog (null,  "Congratulations    + c + "   Chess win!) Of course, you have to end the process after winning. System.exit (0);}  else{point = 0;}}         /* Here you can choose to play double or man-machine battle.              don't get too excited, man-machine PvP is just random input, and it doesn't add any core algorithms.              Follow the opportunity I will continue to update.         */public void show () {System.out.println ("Double battle Please enter: 1, Man-Machine battle Please enter 2. "); /input data with scanner. Scanner sc = new scanner (system.in); Int option = sc.nextint ();// Here you can choose between a double battle or a man-machine battle. Switch (option) {            //duo vs. Case 1:while   (flag) {System.out.println ("Ask black to enter the coordinates of the pawn: (e.g., 1 3)"); Maninput (""); SYSTEM.OUT.PRINTLN ("Please white enter the coordinates of the pawn: (e.g.: 1 3)"); Maninput ("0");} The man-machine battle case 2:while  (flag) {System.out.println ("Please enter the coordinates of the pawn: (e.g.: 1 3)"); Maninput (") SYSTEM.OUT.PRINTLN ("Computer:"); computer ("0");} Machine battle, used to quickly debug case 3: while  (flag) {System.out.println ("pc A:"); Computer (""); SYSTEM.OUT.PRINTLN ("Computer B:"); computer ("0");}} Computer randomly. Public boolean computer (string c) {int row = ran.nextint (size); Int column  = ran.nextint (size);                 while (board[row][column] !=  "ten") {row = ran.nextint (size); column =  ran.nextint (size);} if (board[row][column] ==  "ten") {System.out.println (" + row + ", " +  column +  ")" Board[row][column] = c;printarray (board); Isfive (Row, column, board ,  c);} Else return false;return true;} Artificial. Input coordinate coordinateprivate void maninput (string c)// int row,int column{try{  Scanner scan = new scanner (system.in); &NBSP;INT&NBsp;row = scan.nextint ();  int column = scan.nextint ();if  (board[row][column ] ==  "Ten")//row>=0&&column>=0&&row<size&&column<size&&{ System.out.println (" + row + ", " + column + "); Board[row][column]  = c;//  Optional characters ' ★ ', ' █ ', ' ▓ ', ' ', ' ' ╋ ', ' "' 0printArray (board); Isfive (Row, column, board, &NBSP;C);}  else{`
`system.out.println ("the position has a pawn, please put it in another position!") "); Maninput (c);}}  catch  (arrayindexoutofboundsexception e) {`
`System.out.println ("Beyond the board position, please re-enter!") "); Maninput (c);} catch (Inputmismatchexception e) {//joptionpane.showmessagedialog (null, "the number entered is not valid, please re-enter!") "); System.out.println ("The number entered is not valid, please re-enter!")                "); Maninput (c);} System.out.println ("I am beautiful debugging, I am everywhere!") ");} Prints a two-dimensional array of type String private void PrintArray (string[][] arr) {for (int i = 0; i < arr.length; i++) {for (int j = 0; J < A Rr[i].length; J + +) {System.out.print (arr[i][j]);} System.out.println ("");}} public static void Main (string[] args) {Newgobang Gobang = new Newgobang (); Gobang.initboard (); Gobang.show ();}}`

Java implementation Simple Gobang (although a lot of bugs, but will continue to improve)

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