在Java中输入数组可以通过以下几种方法:
逐个元素输入
```java
import java.util.Scanner;
public class ArrayInput {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int[] myArray = new int;
for (int i = 0; i < myArray.length; i++) {
System.out.println("输入第 " + (i + 1) + " 个元素:");
myArray[i] = scanner.nextInt();
}
System.out.println("输入的数组元素为:");
for (int element : myArray) {
System.out.println(element);
}
}
}
通过字符串输入
```java
import java.util.Scanner;
public class ArrayInput {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入几个数并用逗号隔开:");
String str = scanner.next().toString();
String[] arr = str.split(",");
int[] b = new int[arr.length];
for (int j = 0; j < b.length; j++) {
b[j] = Integer.parseInt(arr[j]);
System.out.println(b[j]);
}
}
}
使用`Arrays.sort()`方法自动排序输入 (此方法通常用于已有数组值,需要排序):
```java
import java.util.Arrays;
import java.util.Scanner;
public class ArrayInput {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int[] myArray = new int;
for (int i = 0; i < myArray.length; i++) {
System.out.println("输入第 " + (i + 1) + " 个元素:");
myArray[i] = scanner.nextInt();
}
Arrays.sort(myArray);
System.out.println("排序后的数组元素为:");
for (int element : myArray) {
System.out.println(element);
}
}
}
使用`ArrayList`动态数组```java
import java.util.ArrayList;
import java.util.Scanner;
public class ArrayInput {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
ArrayList
numbers = new ArrayList<>();
System.out.println("请输入几个数并用逗号隔开:");
String str = scanner.next().toString();
String[] arr = str.split(",");
for (String s : arr) {
numbers.add(Integer.parseInt(s));
}
System.out.println("输入的动态数组元素为:");
for (int number : numbers) {
System.out.println(number);
}
}
}
以上是Java中输入数组的一些常见方法。您可以根据需要选择合适的方法进行操作