268. Missing Number

Author: VinayByte

268. Missing Number.kt

@@ -0,0 +1,8 @@
+class Solution {
+    fun missingNumber(nums: IntArray): Int {
+        val n = nums.size
+        val expextedSum = n*(n+1)/2
+        val actualSum = nums.sum()
+        return expextedSum - actualSum  
+    }
+}