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Author: 10coder

MissingNumber.java

@@ -0,0 +1,19 @@
+
+import java.util.stream.IntStream;
+
+public class MissingNumber {
+
+        public static int missingNumber(int[] nums) {
+            int res=0, i=0;
+            for(i=0;i<nums.length;i++) {
+                res = res^i^nums[i];
+            }
+            //since xor is done till n-1
+            return res^i;
+        }
+
+    public static void main(String[] args) {
+            int[] nums = IntStream.range(0,20).filter(x->x!=5).toArray();
+        System.out.println(missingNumber(nums));
+    }
+}