Missing Number

joharbatta · joharbatta · commit 79b8ce339a66 · 2020-01-14T23:37:06.000+05:30
diff --git a/array/missingNum.java b/array/missingNum.java
@@ -0,0 +1,18 @@
+import java.util.*;
+class missingnum
+{
+    public static void main(String[] args) {
+        Scanner sc=new Scanner(System.in);
+        int n=sc.nextInt();
+        int arr[]=new int[n-1];
+        int total=n*(n+1)/2;
+        int sum=0;
+        for(int  i=0;i<n-1;i++)
+        {
+            arr[i]=sc.nextInt();
+            total-=arr[i];
+        } 
+        System.out.println(total);
+
+    }
+}
