Create arrayintersection.cpp

anmolrishi#13 
array intersection in cpp

Intersection of two Integer arrays/arrayintersection.cpp

@@ -0,0 +1,24 @@
+#include <vector>
+
+//approach with O(n2) time complexity
+std::vector<int> ArrayIntersections(int * arr1, int arr1_size, int * arr2, int arr2_size)
+{
+  std::vector<int> vIntersections;
+  for(int i = 0; i<arr1_size; i++)
+  {
+    for(int j = 0; i<arr2_size; i++)
+    {
+      if(arr1[i] ^ arr2[j])
+      {
+        continue;
+      }
+      else
+      {
+        //both are equal
+        vIntersections.push_back(arr1[i]);
+        break;
+      }
+    }
+  }
+  return vIntersections;
+}