过去几天我一直在为大学做一个Java项目。我已经打了几个bumnps，我在这个网站的用户帮助下克服了这个问题。我正在做的是一个单词搜索，它将用户输入的单词作为字符串的数组列表，并在2维数组上随机映射。我已经创建了选择行和列的方法，用于选择单词的方向，以及检查是否有足够明确的空间用于所述单词。我在编译代码时遇到了一些错误。这是我之前的问题，所以你可以看到，我从那时起取得了一些进展:) https://stackoverflow.com/questions/10193291/adding-words-to-a-2-d-array
具体来说，问题是我试图通过使用随机数来决定选择哪种方法来引用doitfit方法（向上，向下，向左或向右）。它没有编译：/
import java.io.* ;
import java.util.ArrayList ;
public class WordSearchPuzzle
{
private char[][] puzzle ;
private ArrayList<String> puzzleWords ;
private int letterCount = 0 ;
private int gridDimensions;
public static int row, column;
public WordSearchPuzzle(ArrayList<String> userSpecifiedWords)
{
this.puzzleWords = userSpecifiedWords ;
}
private void createPuzzleGrid()
{
int i, itemLength;
String item;
for (i = 0; i < puzzleWords.size(); i++) {
item = puzzleWords.get(i);
itemLength = item.length();
letterCount = letterCount + itemLength;
}
gridDimensions = letterCount * 2;
puzzle = new char[gridDimensions][gridDimensions] ;
}
private void generateWordSearchPuzzle()
{
}
public void northSouthEastWest(String word)
{
int upDownLeftRight, north, south, east, west;
north = 1;
south = 2;
east = 3;
west = 4;
String Word;
upDownLeftRight = (int)(Math.random() * 4);
if(upDownLeftRight == north){
fitWordNorth(word);
}else if(upDownLeftRight == south){
fitWordSouth(word);
}else if(upDownLeftRight == east){
fitWordEast(word);
}else if(upDownLeftRight == west){
fitWordWest(word);
}
}
public void firstSpace(String word)
{
row = (int)(Math.random() * gridDimensions);
column = (int)(Math.random() * gridDimensions);
if(puzzle[row][column] != ' ') {
firstSpace(word);
} else {
northSouthEastWest(word);
}
}
public void fitWordNorth(String word)
{
boolean clear = false;
int p, i;
if(row >= word.length()){
for(i = row - 1; i < word.length(); i--){
if(puzzle[i][column] != ' '){
firstSpace(word);
}else{
clear = true;
}
if(clear == true){
for(p = 0; p < word.length(); p++){
puzzle[row - p][column] = word.charAt(p);
}
}else{
firstSpace(word);
}
}
}
}
public void fitWordSouth(String word)
{
boolean clear = false;
int row, column, p, i;
if(row >= word.length()){
for(i = row + 1; i < word.length(); i++){
if(puzzle[i][column] != ' '){
firstSpace(word);
}
clear = true;
}
}else{
firstSpace(word);
}
if(clear == true){
for(p = 0; p < word.length(); p++){
puzzle[row + p][column] = word.charAt(p);
}
}else{
firstSpace(word);
}
}
public void fitWordWest(String word)
{
boolean clear = false;
int row, column, p, i;
if(column >= word.length()){
for(i = column - 1; i < word.length(); i--){
if(puzzle[row][i] != ' '){
firstSpace(word);
}
clear = true;
}
}else{
firstSpace(word);
}
if(clear == true){
for(p = 0; p < word.length(); p++){
puzzle[row][column - p] = word.charAt(p);
}
}else{
firstSpace(word);
}
}
public void fitWordEast(String word)
{
boolean clear = false;
int row, column, p, i;
if(column >= word.length()){
for(i = column + 1; i < word.length(); i++){
if(puzzle[row][i] != ' '){
firstSpace(word);
}
clear = true;
}
}else{
firstSpace(word);
}
if(clear == true){
for(p = 0; p < word.length(); p++){
puzzle[row][column + p] = word.charAt(p);
}
}else{
firstSpace(word);
}
}
}
答案 0 :(得分：1)
您从northSouthEastWest（）函数调用fitWordNorth（Word），fitWordSouth（Word），fitWordEast（Word），fitWordWest（Word）函数。编译器抱怨，因为在类范围或方法范围中没有定义为Word的变量。
我也没有看到在程序的任何地方调用northSouthEastWest（）函数。请将函数定义为northSouthEastWest（String Word）以使函数起作用。
答案 1 :(得分：0)
在进一步查看代码后，可能会有很多建议。我会在有空的时候更新这个答案。 你可能有一个主要方法......比如
/**
* @param args
*/
public static void main(String[] args) {
if(null!=args && args.length>0){
WordSearchPuzzle wsp = new WordSearchPuzzle(Arrays.asList(args));
}else{
System.err.println("Please enter words to search");
}
//TODO
//Call your functions in the series that you want...
}
你的构造函数可以像
public WordSearchPuzzle(List<String> userSpecifiedWords)
{
this.puzzleWords = userSpecifiedWords ;
}
将puzzleWords变量定义为List而不是ArrayList
private List<String> puzzleWords ;
你的northSouthEastWest函数可以是:(北，南，东，西可以是常量）
public static final int NORTH= 0;
public static final int SOUTH = 1;
public static final int EAST = 2;
public static final int WEST = 3;
public void northSouthEastWest(String Word)
{
int upDownLeftRight = (int)(Math.random() * 3);
switch(upDownLeftRight){
case NORTH: fitWordNorth(Word);break;
case SOUTH: fitWordSouth(Word);break;
case WEST: fitWordWest(Word);break;
case EAST: fitWordEast(Word);break;
}
}
您可以考虑使用属性row，column，p，i创建另一个类，并在Puzzle类中包含此对象的实例。