CS 1713 Introduction to Programming II Spring 2012 Daily Answers

Class 25:

1. public static int posInteger(Stirng s) {
      try {
         int n = Integer.parseInt(s);
         if (n > 0)
            return n;
         return -1;
      } catch (Exception e) {
         return -1;
      }
   }
   

2. public static boolean rowWin(char[] list) {
      if (list.length == 0)
         return false;   /* or true */
      if ((list[0] != 'X') && (list[0] != 'O'))
         return false;
      for (int i=1;i<list.length;i++)
         if (list[i] != list[0])
            return false;
      return true;
   }
   

   ---

3. public static boolean rowWin(char[][] board, int n, char c) {
      for (int i=0;i<board[n].length;i++)
         if (board[n][i] != c)
            return false;
      return true;
   }
   

4. public static boolean colWin(char[][] board, int n, char c) {
      for (int i=0;i<board.length;i++)
         if (board[i][n] != c)
            return false;
      return true;
   }