Find seller by sellerno

src/core/marketplace.cpp

@@ -41,4 +41,15 @@ int Marketplace::getNumSellersDelete()
     return count;
 }
 
-void Marketplace::sortSellers() { std::sort(sellers_.begin(), sellers_.end()); }
+void Marketplace::sortSellers() { std::sort(sellers_.begin(), sellers_.end()); }
+
+Seller* Marketplace::findSellerWithSellerNo(int sellerNo)
+{
+    auto iter =
+        std::find_if(sellers_.begin(), sellers_.end(), [sellerNo](const auto& a) {
+            return a->getSellerNo() == sellerNo;
+        });
+    if (iter == sellers_.end())
+        return nullptr;
+    return (*iter).get();
+}

src/core/marketplace.h

@@ -26,6 +26,7 @@ class Marketplace
     int getNextSellerNo();
     int getNumSellersDelete();
     void sortSellers();
+    Seller* findSellerWithSellerNo(int sellerNo);
 
   private:
     SellersVec sellers_;