diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/1046. Last Stone Weight" "b/leetcode3/\354\240\225\354\247\204\354\230\201/1046. Last Stone Weight"
new file mode 100644
index 00000000..b7ae55c9
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/1046. Last Stone Weight"	
@@ -0,0 +1,21 @@
+/**
+ * @param {number[]} stones
+ * @return {number}
+ */
+var lastStoneWeight = function(stones) {
+    while (stones.length > 1) {
+        stones.sort((a, b) => a - b);
+
+        let i = stones.length - 1;
+
+        if (stones[i] == stones[i - 1]) {
+            stones.pop();
+            stones.pop();
+        } else {
+            stones[i - 1] = stones[i] - stones[i - 1];
+            stones.pop();
+        }
+    }
+
+    return stones.length === 1 ? stones[0] : 0;
+};
diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/838. Push Dominoes" "b/leetcode3/\354\240\225\354\247\204\354\230\201/838. Push Dominoes"
new file mode 100644
index 00000000..4f41d6f1
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/838. Push Dominoes"	
@@ -0,0 +1,17 @@
+/**
+ * @param {string} dominoes
+ * @return {string}
+ */
+var pushDominoes = function(dominoes) {
+    const arr = dominoes.split("");
+
+    let left = 0;
+
+    for (let right = 1; right < arr.length; right)++{
+        if (arr[right] !== '.'){
+            left = right;
+        }
+    }
+
+    return arr.join("");
+};