Solution: The Product SKU Generator

public class SKUGenerator {
    
    public static String generateSKU(String productName, int id) {
        // Extract prefix (first 3 chars)
        String prefix = productName.substring(0, 3).toUpperCase();
        
        // Extract suffix (last 2 chars)
        String suffix = productName.substring(productName.length() - 2).toUpperCase();
        // Build string efficiently
        StringBuilder sb = new StringBuilder();
        sb.append(prefix);
        sb.append("-");
        sb.append(id);
        sb.append("-");
        sb.append(suffix);
        
        return sb.toString();
    }
    public static void main(String[] args) {
        String item = "Gaming Laptop";
        int id = 5510;
        String result = generateSKU(item, id);
        
        System.out.println("Input: " + item);
        System.out.println("Generated SKU: " + result); 
        // Expected: GAM-5510-OP
    }
}