Create 419. 甲板上的战舰.js

Author: yinxin630

419. 甲板上的战舰.js

@@ -0,0 +1,19 @@
+/**
+ * @param {character[][]} board
+ * @return {number}
+ */
+var countBattleships = function (board) {
+  let result = 0;
+  for (let i = 0; i < board.length; i++) {
+    for (let j = 0; j < board[i].length; j++) {
+      if (
+        board[i][j] === 'X' &&
+        board[i][j - 1] !== 'X' &&
+        (!board[i - 1] || board[i - 1][j] !== 'X')
+      ) {
+        result++;
+      }
+    }
+  }
+  return result;
+};