Question

Java中把若干的数字转换为整型数组，用Scanner扫描了数字输入后怎么转换为数组并输出？

Answer 1

import java.util.Arrays;
import java.util.Scanner;

public class Test {
public static void main(String[] args) {
int[] arr={3,6,5,8,4,7,2};
//用scanner方法输入1，新数列变成int[] arr={1,3,6,5,8,4,7,2},并能排序输出
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
int[] arr2 = new int[arr.length + 1];
Arrays.fill(arr2,0);

System.out.println(Arrays.toString(arr2));
arr2 = Arrays.copyOf(arr,arr.length + 1);
arr2[arr.length] = number;

System.out.println(Arrays.toString(arr2));
Arrays.sort(arr2);
System.out.println(Arrays.toString(arr2));
}
}