added adoptionCRUD.sol and ExternalStorage.sol

contracts/AdoptionCRUD.sol

@@ -0,0 +1,24 @@
+
+pragma solidity < 0.7.10;
+import ./'externalAdoptionStorage.sol';
+contract Adoption is externalStorage {
+   // Adoption a pet
+   //SETTER,CREATING AND UPDATING FUNCTION
+   function adopt(uint petId) public returns (uint) {
+       require(petId >= 0 && petId <= 15,'An adopter cannot adopt more than 16 pets');
+       adopters[petId] = msg.sender;
+       return petId;
+   }
+
+   // Retrieving the adopters
+   //READ FUNCTION
+
+      function getAdopters(uint id) public view returns(address) {
+       return adopters[id];
+   }
+
+   function deletePet(uint id) public {
+       require(id > 15,'You have not reach your limit of pet adoption');
+       delete adopters[id];
+    }
+}

contracts/ExternalStorage.sol

@@ -3,7 +3,7 @@ pragma solidity >=0.4.22 <0.6.0;
 contract ExternalStorage{
 
 
-    mapping(bytes32 => uint) internal uIntStorage;
+    mapping(bytes32 => uint) internal uintStorage;
     mapping(bytes32 => address) internal addressStorage;
 
     struct Profile{

contracts/NewContract.sol

@@ -0,0 +1,35 @@
+pragma solidity >=0.5.0 <0.6.0;
+
+contract Participants {
+	// Event 
+	event NewParticipant(string name, string profession, uint age);
+
+	uint participantsNum = 500;
+	uint activeParticipants = 50 ** participantsNum;
+
+	struct ParticipantData {
+		string name;
+		string profession;
+		string hobby;
+		uint age;
+	}
+	// Dynamic Array to keep record growing
+	ParticipantData[] public participants;
+
+	// This function create new participants' info/data
+	function createNewParticipant (string memory _name, string memory _profession, string _hobby, uint age) public {
+		// participants.push(ParticipantData(_name, _profession, _hobby, age));
+		uint data = participants.push(ParticipantData(_name, _profession, age)) - 1;
+		emit NewParticipant(data, name, profession, age);
+	}
+
+	function _activeParticipants (string memory _participants) private view returns (uint) {
+		uint participant = uint(keccak256(abi.encodePacked(_participants)));
+		return participant % activeParticipants;
+	}
+
+	function createActiveParticipants (string memory _name, string _memory _profession, string _hobby, uint age) public {
+		uint create = _activeParticipants(_participants);
+		createActiveParticipants(_name, _profession, _hobby, age, create);
+	}
+}

contracts/externalAdoptionStorage.sol

@@ -0,0 +1,5 @@
+pragma solidity < 0.7.10;
+    contract externalStorage{
+    //STATE VARIABLE
+    address[16] public adopters;
+}