如何在數組中找到用戶輸入的字符串並獲取位置而不使用if或select？

Question

所以我從自己購買的一本書教自己的Java，其中一個練習就是詢問用戶他們想要什麼樣的物品，並給他們輸入物品的價格。目前爲止，我設置了這個設置：

String[] flowerName = {"Pentunia", "Pansy", "Rose", "Violet", "Carnation"}; 
    String[] flowerPrice = {".50", ".75", "1.50", ".50", ".80"}; 

    System.out.println("What kind of flower would you like?"); 

    Scanner keyboard = new Scanner(System.in); 
    String strFlowerIn = keyboard.next(); 

    System.out.println("How many would you like?"); 
    String strFlowerNumIn = keyboard.next(); 

所以如果用戶輸入的玫瑰，它會詢問有多少這樣的結果將是：

3 Roses = 1.50 * 3 = 4.50 

如何拍攝他們進入什麼，並進行比較的數組找到索引？

Answer 1

不使用，如果：

int index = Arrays.asList(flowerName).indexOf(strFlowerIn); 
double price = flowerPrice[index]; 
double total = price * intFlowerNumIn; 

你必須改變一些東西在你的代碼雖然。這是一個完整的例子：

String[] flowerName = {"Pentunia", "Pansy", "Rose", "Violet", "Carnation"}; 
Double[] flowerPrice = {.50d, .75d, 1.50d, .50d, .80d}; 

System.out.println("What kind of flower would you like?"); 

Scanner keyboard = new Scanner(System.in); 
String strFlowerIn = keyboard.nextLine(); 
int index = Arrays.asList(flowerName).indexOf(strFlowerIn); 

System.out.println("How many would you like?"); 
int intFlowerNumIn = keyboard.nextInt(); 
decimal price = flowerPrice[index]; 
decimal total = price * intFlowerNumIn; 

System.out.println("Total price: " + total);