Chapter 1 of crazy Java Handouts

Chapter 1 of crazy Java Handouts
1 package com. test; 2 3 public class Chessboard {4 // defines a two-dimensional array as a Chessboard 5 private String [] [] board; 6 // defines the size of the board 7 public static final int BOARD_SIZE = 22; 8 9 // initialize the checker 10 public void initBoard () {11 board = new String [BOARD_SIZE] [BOARD_SIZE]; // create a two-dimensional array 12 // define the initial value, nested loop 13 for (int I = 0; I <BOARD_SIZE; I ++) {14 for (int j = 0; j <BOARD_SIZE; j ++) {15 board [I] [j] = "10"; 16} 17} 18} 19 // The meaning of the test function is unknown 20 public void test () {21 Object [] [] array = new Object [10] [10]; 22 for (int I = 0; I <array. length; I ++) {23 for (int j = 0; j <array. length; j ++) {24 array [I] [j] = new Object (); 25} 26} 27} 28 // print the checker 29 public void printBoard () {30 for (int I = 0; I <BOARD_SIZE; I ++) {31 for (int j = 0; j <BOARD_SIZE; j ++) {32 System. out. print (board [I] [j]); 33} 34 System. out. print ("\ n"); 35} 36} 37 // place the chess piece 38 public void setBoard (int posX, int posY, String chessman) {39 this. board [posX] [posY] = chessman; 40} 41 // returns the checker 42 public String [] [] getBoard () {43 return this. board; 44} 45 46}Chessboard. java 1 package com. test; 2 3 public enum Chessman {4 BLACK ("●"), WHITE ("○ "); 5 // set the attributes of two static pawns. 6 // equivalent to public static final Chessman BLACK = new Chessman ("●") 7 private String chessman; 8 // After setting, you can pass. BLACK. set chessman to 9 private Chessman (String chessman) {10 this. chessman = chessman; 11} 12 // return the 13 public String getChessman () {14 return this. chessman; 15} 16}Chessman. java

The Chessboard and Chessman)

Finally, gameGobangGame. java

1 package com. test; 2 3 import java. io. bufferedReader; // input 4 import java. io. inputStreamReader; // output 5 6 public class GobangGame {7 private final int WIN_COUNT = 5; // set the number of winning pawns 8 private int posX = 0; 9 private int posY = 0; 10 private Chessboard chessboard; // an instance of the Chessboard class 11 12 // call the chessboard instance 13 public GobangGame (Chessboard chessboard) {14 this. chessboard = chessboard; 15} 16 // receives the x and y values in inputStr and assigns them to pos X/Y 17 public boolean isValid (String inputStr) {18 String [] posStrArr = inputStr. split (","); 19 // splits the string into character arrays with the separator "," 20 try {21 posX = Integer. parseInt (posStrArr [0])-1; 22 posY = Integer. parseInt (posStrArr [1])-1; 23} catch (NumberFormatException e) {24 chessboard. printBoard (); 25 System. out. println ("pls input position like num, num"); 26 return false; 27} 28 if (posX <0 | posX> = Chessboard. BOARD_SIZE | posY <0 | posY> = Chessboard. BOARD_SIZE) {29 chessboard. printBoard (); 30 System. out. println ("reinput"); 31 return false; 32} 33 // receives chessboard 34 String [] [] board = chessboard. getBoard (); 35 36 37 if (board [posX] [posY]! = "10") {38 chessboard. printBoard (); 39 System. out. println ("re input"); 40 return false; 41} 42 return true; 43} 44 // main game flow function, with figure 45 public void start () throws Exception {46 boolean isOver = false; 47 chessboard. initBoard (); 48 chessboard. printBoard (); 49 BufferedReader br = new BufferedReader (new InputStreamReader (System. in); 50 String inputStr = null; 51 // If the input is not empty, start to loop 52 while (inputStr = br. readLine ())! = Null) {53 isOver = false; 54 // verify that it is valid (it is a chessboard coordinate) 55 if (! IsValid (inputStr) {56 continue; 57} 58 // set chessman 59 String Chessman = chessman. BLACK. getChessman (); 60 chessboard. setBoard (posX, posY, chessman); 61 // determine whether to win 62 if (isWon (posX, posY, chessman) {63 isOver = true; 64} else {65 int [] computerPosArr = computerDo (); 66 chessman = Chessman. WHITE. getChessman (); 67 chessboard. setBoard (computerPosArr [0], computerPosArr [1], chessman); 68 if (isWon (computerPosArr [0], comp UterPosArr [1], chessman) {69 isOver = true; 70} 71} 72 // determine whether to end 73 if (isOver) {74 if (isReplay (chessman )) {75 chessboard. initBoard (); 76 chessboard. printBoard (); 77 continue; 78} 79 break; 80} 81 // perform the next round of 82 chessboard. printBoard (); 83 System. out. println ("pls input the num"); 84} 85} 86 // whether to restart the game 87 public boolean isReplay (String chessman) throws Exception {88 chessboard. printBoard (); 89 String Message = chessman. equals (Chessman. BLACK. getChessman ())? "You win": "you lose"; 90 System. out. println (message + "paly again? (Y/N) "); 91 BufferedReader br = new BufferedReader (new InputStreamReader (System. in); 92 if (br. readLine (). equals ("y") {93 return true; 94} 95 return false; 96} 97 // generate a computer chess piece (random generation, no logic) 98 public int [] computerDo () {99 int posX = (int) (Math. random () * (Chessboard. BOARD_SIZE-1); 100 int posY = (int) (Math. random () * Chessboard. BOARD_SIZE-1); 101 String [] [] board = chessboard. getBoard (); 102 // verify that the coordinates of the next chess game on the computer do not have a pawn Number of 103 Hile (board [posX] [posY]! = "10") {104 posX = (int) (Math. random () * Chessboard. BOARD_SIZE-1); 105 posY = (int) (Math. random () * Chessboard. BOARD_SIZE-1); 106} 107 int [] result = {posX, posY}; 108 return result; 109} 110 // victory decision (the method is to check around the current pawn, non-traversal checkboard method) 111 public boolean isWon (int posX, int posY, String ico) {112 int startX = 0; // The starting X coordinate of the straight line is 113 int startY = 0; // The start of the straight line Y coordinate 114 int endX = Chessboard. BOARD_SIZE-1; // linear end X coordinate 115 int endY = endX; // linear end Y coordinate 116 int sameCou Nt = 0; // Number of adjacent pawns on the same line 117 int temp = 0; 118 // calculate the minimum X coordinate and Y coordinate 119 temp = posX-WIN_COUNT + 1; 120 startX = temp <0? 0: temp; // if less than 0, then 0121 temp = posY-WIN_COUNT + 1; 122 startY = temp <0? 0: temp; 123 // calculate the maximum X coordinate of the pawns and Y coordinate 124 temp = posX + WIN_COUNT-1; 125 endX = temp> Chessboard. BOARD_SIZE-1? Chessboard. BOARD_SIZE-1: temp; 126 temp = posY + WIN_COUNT-1; 127 endY = temp> Chessboard. BOARD_SIZE-1? Chessboard. BOARD_SIZE-1: temp; 128 // calculate the number of identical adjacent pawns from left to right 129 String [] [] board = chessboard. getBoard (); 130 // 131 in the vertical direction for (int I = startY; I <endY; I ++) {132 if (board [posX] [I] = ico & board [posX] [I + 1] = ico) {133 sameCount ++; 134} else if (sameCount! = WIN_COUNT-1) {135 sameCount = 0; 136} 137} 138 // horizontal direction 139 if (sameCount = 0) {140 for (int I = startX; I <endX; I ++) {141 if (board [I] [posY] = ico & board [I + 1] [posY] = ico) {142 sameCount ++; 143} else if (sameCount! = WIN_COUNT-1) {144 sameCount = 0; 145} 146} 147 if (sameCount = 0) {148 int j = startY; 149 for (int I = startX; <endX; I ++) {151 if (j <endY) {152 if (board [I] [j] = ico & board [I + 1] [j + 1] = ico) {153 sameCount ++; 154} else if (sameCount! = WIN_COUNT-1) {155 sameCount = 0; 156} 157 j ++; 158} 159} 160 return sameCount = WIN_COUNT-1? True: false; 162} 163 164 165 public static void main (String [] args) throws Exception {166 GobangGame gb = new GobangGame (new Chessboard ()); // create instance 167 gb. start (); // start Program 168} 169} 170

The start () function writes multiple if statements, which is less readable. Attach the flowchart (^... ^! Handwriting dregs)

-END

-^

-When there were several past injuries in the world, the mountain remains chilling.

-2016-09-06