[Sync Iteration] go/vehicle-purchase/1

solutions/go/vehicle-purchase/1/vehicle_purchase.go

@@ -0,0 +1,52 @@
+package purchase
+import (
+    "fmt"
+)
+// NeedsLicense determines whether a license is needed to drive a type of vehicle. Only "car" and "truck" require a license.
+func NeedsLicense(kind string) bool {
+    if kind == "car"|| kind == "truck"{
+        return true
+    } 
+    return false
+}
+
+// ChooseVehicle recommends a vehicle for selection. It always recommends the vehicle that comes first in lexicographical order.
+func ChooseVehicle(option1, option2 string) string {
+    var vehicle string
+	if option1 < option2 {
+        vehicle = option1
+    } else {
+        vehicle = option2
+    }
+    return fmt.Sprintf("%v is clearly the better choice.", vehicle)
+}
+
+// CalculateResellPrice calculates how much a vehicle can resell for at a certain age.
+func CalculateResellPrice(originalPrice, age float64) float64 {
+   if age < 0 {
+		return 0
+	}
+    var cost float64 
+
+    if age < 3 {
+    	cost = (originalPrice * (80.0/100.0))
+    } else if age >= 10 {
+    	cost = (originalPrice * (50.0/100.0))
+    } else if age >=3 && age < 10  {
+    	cost = (originalPrice * (70.0/100.0))
+    }
+
+	return cost
+
+	// switch {
+	// case age < 3:
+	// 	percentage = 0.80
+	// case age >= 10:
+	// 	percentage = 0.50
+	// default:
+	// 	// Covers the 3 to 9.99... range
+	// 	percentage = 0.70
+	// }
+
+	// return originalPrice * percentage
+}