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                # Kotlin 程序:將列表(`ArrayList`)轉換為`Array`,反之亦然 > 原文: [https://www.programiz.com/kotlin-programming/examples/convert-list-array](https://www.programiz.com/kotlin-programming/examples/convert-list-array) #### 在此程序中,您將學習在 Kotlin 中使用`toArray()`將列表轉換為數組,并使用`asList()`將數組轉換為列表。 ## 示例 1:將`ArrayList`轉換為數組 ```kt fun main(args: Array<String>) { ? // an arraylist of vowels val vowels_list: List<String> = listOf("a", "e", "i", "o", "u") // converting arraylist to array val vowels_array: Array<String> = vowels_list.toTypedArray() // printing elements of the array vowels_array.forEach { System.out.print(it) } } ``` **輸出** ```kt aeiou ``` 在上面的程序中,我們定義了一個`ArrayList``vowels_list`。 要將`ArrayList`轉換為數組,我們使用了`toTypedArray()`方法。 最后,使用`forEach()`循環打印數組的元素。 * * * ## 示例 2:將數組轉換為`ArrayList` ```kt fun main(args: Array<String>) { // vowels array val vowels_array: Array<String> = arrayOf("a", "e", "i", "o", "u") // converting array to array list val vowels_list: List<String> = vowels_array.toList() // printing elements of the array list vowels_list.forEach { System.out.print(it) } } ``` **輸出** ```kt aeiou ``` 要將數組轉換為`ArrayList`,我們使用了`toList()`方法。 以下是等效的 Java 代碼: [Java 程序:將列表轉換為數組,反之亦然](/java-programming/examples/convert-list-array "Java program to convert list to array and vice-versa")。
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