diff --git a/FindMissingNumber.java b/FindMissingNumber.java
new file mode 100644
index 00000000..b8ef1195
--- /dev/null
+++ b/FindMissingNumber.java
@@ -0,0 +1,15 @@
+
+class FindMissingNumber {
+    public int missingNumber(int[] nums) {
+        int m=nums.length,s1=0;
+        int sum=(m*(m+1))/2;
+        for(int num:nums){
+            s1+=num;
+        }
+        sum=sum-s1;
+        return sum;
+
+
+        
+    }
+}
\ No newline at end of file
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 @@
-