Deloitte | COGNIZANT | IBM | CAPGEMINI

import java.util.*; class Customer { private int customerId; private String customerName; private int numberOfOrders; public Customer() {} public Customer(int customerId, String customerName, int numberOfOrders) { this.customerId = customerId; this.customerName = customerName; this.numberOfOrders = numberOfOrders; } // Getters public int getCustomerId() { return customerId; } public String getCustomerName() { return customerName; } public int getNumberOfOrders() { return numberOfOrders; } public void setCustomerId(int customerId) { this.customerId = customerId; } public void setCustomerName(String customerName) { this.customerName = customerName; } public void setNumberOfOrders(int numberOfOrders) { this.numberOfOrders = numberOfOrders; } } public class Main { public static HashMap<String, String> getCustomerWithOrders(List<Customer> customers) { HashMap<String, String> result = new HashMap<>(); if (customers == null || customers.isEmpty()) { return result; } Customer maxCustomer = customers.get(0); for (Customer customer : customers) { if (customer.getNumberOfOrders() > maxCustomer.getNumberOfOrders()) { maxCustomer = customer; } } result.put("CustomerID", String.valueOf(maxCustomer.getCustomerId())); result.put("CustomerName", maxCustomer.getCustomerName()); result.put("CustomerOrders", String.valueOf(maxCustomer.getNumberOfOrders())); return result; } } customer with maximum orders✅✅ #Genpact