diff --git a/bangdori/11.js b/bangdori/11.js
new file mode 100644
index 0000000..7d81e97
--- /dev/null
+++ b/bangdori/11.js
@@ -0,0 +1,22 @@
+/**
+ * @param {number[]} height
+ * @return {number}
+ */
+var maxArea = function (height) {
+  let ltr = 0,
+    rtr = height.length - 1;
+  let waters = getWaters(height, ltr, rtr);
+
+  while (ltr < rtr) {
+    if (height[ltr] > height[rtr]) rtr--;
+    else ltr++;
+
+    waters = Math.max(waters, getWaters(height, ltr, rtr));
+  }
+
+  return waters;
+};
+
+function getWaters(height, ltr, rtr) {
+  return (rtr - ltr) * Math.min(height[ltr], height[rtr]);
+}