# Java 程序：按升序排序数组 > 原文： [https://beginnersbook.com/2018/10/java-program-to-sort-an-array-in-ascending-order/](https://beginnersbook.com/2018/10/java-program-to-sort-an-array-in-ascending-order/) 在这个 java [教程](https://beginnersbook.com/java-tutorial-for-beginners-with-examples/)中，我们使用临时变量和嵌套`for`循环按升序对数组进行排序。我们使用`Scanner`类来获取用户的输入。 ## Java 示例：按升序排序数组 在该程序中，要求用户输入他想要输入的元素的数量。根据输入，我们声明了一个`int`数组，然后我们接受用户输入的所有[数字并将它们存储在数组中](https://beginnersbook.com/2014/07/java-program-to-get-input-from-user/)。 一旦我们将所有数字存储在数组中，我们就会使用[嵌套`for`循环](https://beginnersbook.com/2015/03/for-loop-in-java-with-example/)对它们进行排序。 ```java import java.util.Scanner; public class JavaExample { public static void main(String[] args) { int count, temp; //User inputs the array size Scanner scan = new Scanner(System.in); System.out.print("Enter number of elements you want in the array: "); count = scan.nextInt(); int num[] = new int[count]; System.out.println("Enter array elements:"); for (int i = 0; i < count; i++) { num[i] = scan.nextInt(); } scan.close(); for (int i = 0; i < count; i++) { for (int j = i + 1; j < count; j++) { if (num[i] > num[j]) { temp = num[i]; num[i] = num[j]; num[j] = temp; } } } System.out.print("Array Elements in Ascending Order: "); for (int i = 0; i < count - 1; i++) { System.out.print(num[i] + ", "); } System.out.print(num[count - 1]); } } ``` 输出：  **相关 Java 示例：** 1. [Java 程序：按升序和降序排序](https://beginnersbook.com/2014/07/java-program-for-bubble-sort-in-ascending-descending-order/) 2. [Java 程序：使用按位 xor 运算符交换两个数字](https://beginnersbook.com/2017/09/java-program-to-swap-two-numbers-using-bitwise-xor-operator/) 3. [Java 程序：按字母顺序排序字符串](https://beginnersbook.com/2018/10/java-program-to-sort-strings-in-an-alphabetical-order/) 4. [Java 程序：反转数组](https://beginnersbook.com/2017/09/java-program-to-reverse-the-array/)