【发布时间】:2011-10-23 02:43:55
【问题描述】:
新手在这里,我编写了一个代码来搜索谜题中的单词,但是在我运行程序后,单词搜索似乎没有返回任何内容。我将字典存储在二叉树中。我需要对照我的树中的每个字符组合检查。你能帮忙吗?谢谢……
这是解决方法
public String solve()
{
int row = puzzle.length;
int coloumns = puzzle[0].length;
this.foundWords = new ArrayList<String>();
if (this.dictionary == null)
return null;
for (int i = 0; i < this.puzzle[0].length; ++i)
{
for (int j = 0; j < this.puzzle.length; ++j)
{
if (this.getWord(i, j, 0, 1) == null)
continue;
if(this.inDictionary(this.getWord(i,j,0,1)))
this.foundWords.add(getWord(i,j,0,1).concat("\n" + this.mapDirection(0)));
for(int d = 0; d<8; ++d)
{
int n = 2;
String word = this.getWord(i,j,d,n);
while(word !=null)
{
if(this.inDictionary(word))
this.foundWords.add(word.concat("\n" + this.mapDirection(d)));
word = this.getWord(i,j,d,n);
n++;
}
}
}
}
String temp = "";
for(int i= 0; i < foundWords.size(); i++)
{
temp = temp.concat(foundWords.get(i));
}
return temp;
}
这样就明白了..
public String getWord(int row, int column, int d, int length)
{
if (length < 1)
return null;
d %= 8;
StringBuilder rBuild = new StringBuilder();
rBuild.append(this.puzzle[row][column]);
length--;
while (length >= 0)
{
if ((d == 3) || (d == 4) || (d == 5))
column--;
if ((d == 1) || (d == 0) || (d == 7))
column++;
if ((d == 1) || (d == 2) || (d == 3))
row--;
if ((d == 5) || (d == 6) || (d == 7))
row++;
if ((row < 0) || (row >= this.puzzle.length)
|| (column < 0) || (column >= this.puzzle[0].length))
return null;
rBuild.append(this.puzzle[row][column]);
length--;
}
return rBuild.toString();
}
方向..
public String mapDirection(int direction)
{
direction %=8;
switch(direction)
{
case 0: return " right";
case 1: return " up and right";
case 2: return " up";
case 3: return " up and left";
case 4: return " left";
case 5: return " down and left";
case 6: return " down and left";
case 7: return " down and right";
}
return null;
}
【问题讨论】:
-
您在单步执行代码时看到了什么?
-
当我运行搜索时,什么也没有发生,没有异常,没有字符串显示,什么也没有。如果我编辑 temp 并将其更改为字符串,我会看到该字符串,所以这告诉我 foundWords 似乎是空的。
-
开发环境不允许你逐行单步执行你的代码吗?如果没有,则添加一堆日志记录功能,以查看它的去向和正在做什么。
标签: java