[황은지] Day16

leetcode3/황은지/682. Baseball Game.js

@@ -0,0 +1,28 @@
+/**
+ * @param {string[]} operations
+ * @return {number}
+ */
+var calPoints = function (operations) {
+  const stack = [];
+  for (const op of operations) {
+    const len = stack.length;
+    if (op === "D") {
+      const x = stack[len - 1];
+      stack.push(+x * 2);
+    } else if (op === "+") {
+      const x = stack[len - 1];
+      const y = stack[len - 2];
+      stack.push(+x + +y);
+    } else if (op === "C") stack.pop();
+    else stack.push(+op);
+
+    console.log(stack);
+  }
+
+  let result = 0;
+  for (const num of stack) {
+    result += num;
+  }
+
+  return result;
+};