diff --git a/FindMissingNumberInSortedArray.js b/FindMissingNumberInSortedArray.js
new file mode 100644
index 00000000..c7ec321f
--- /dev/null
+++ b/FindMissingNumberInSortedArray.js
@@ -0,0 +1,18 @@
+function result(arr) {
+  const n = arr.length;
+  let lo = 0,
+    hi = n - 1;
+
+  while (lo < hi) {
+    const mid = (lo + hi) >>> 1;
+    if (arr[mid] === mid + 1) {
+      lo = mid + 1;
+    } else {
+      hi = mid;
+    }
+  }
+  return lo + 1;
+}
+
+const arr = [1, 2, 3, 4, 6, 7, 8];
+console.log(result(arr));
diff --git a/Problem1.cpp b/Problem1.cpp
deleted file mode 100644
index 8b137891..00000000
--- a/Problem1.cpp
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/Problem1.java b/Problem1.java
deleted file mode 100644
index 8b137891..00000000
--- a/Problem1.java
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/Problem2.cpp b/Problem2.cpp
deleted file mode 100644
index 8b137891..00000000
--- a/Problem2.cpp
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/Problem2.java b/Problem2.java
deleted file mode 100644
index 8b137891..00000000
--- a/Problem2.java
+++ /dev/null
@@ -1 +0,0 @@
-