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题目：

题解：

class Solution {public int countBattleships(char[][] board) {int row = board.length;int col = board[0].length;int ans = 0;for (int i = 0; i < row; ++i) {for (int j = 0; j < col; ++j) {if (board[i][j] == 'X') {if (i > 0 && board[i - 1][j] == 'X') {continue;}if (j > 0 && board[i][j - 1] == 'X') {continue;}ans++;}}}return ans;}
}