WordSearch.java

import java.util.*;

public class WordSearch {
    private char[][] board;

    public WordSearch(int rows, int cols) {
	board = new char[rows][cols];
	for (int i=0;i<rows;i++) {
	    for (int j=0;j<cols;j++) {
		board[i][j]='-';
	    }
	}

    }

    public WordSearch() {
	this(20,20);
    }

    public String toString() {
	String s="";
	for (int i=0;i<board.length;i++) {
	    for (int j=0;j<board[i].length;j++) {
		s=s+board[i][j];
	    }
	    s=s+"\n";
	}
	return s;
    }

    public boolean addWordH(int r,int c,String word) {
	if ((r > board.length || c > (board[0].length - word.length())) || (r < 0 || c < 0))
	    return false;
	for (int i = 0;i < word.length();i++) {
	    if (board[r][c + i] == ('-'))
		board[r][c + i] = word.charAt(i);
	    else if (!(board[r][c + i] == (word.charAt(i))))
		return false;
	}
	return true;
    }
}