Create 1608. Special Array With X Elements Greater Than or Equal X (#490)

Author: Chayandas07

1608. Special Array With X Elements Greater Than or Equal X

@@ -0,0 +1,11 @@
+class Solution {
+public:
+    int specialArray(vector<int>& nums) {
+        sort(nums.begin(),nums.end());
+        for(int i=1;i<=nums.size();i++){
+            auto it=lower_bound(nums.begin(),nums.end(),i);
+            if(nums.end()-it==i) return i;
+        }
+        return -1;
+    }
+};