如何簡單地在Java中獲得對數組的輸入？

Question

像C++一樣，我們可以使用它。

a[5]; 
copy(istream_iterator<int>(cin),istream_iterator<int>(),a); 

是否有一些簡單的方法從Java輸入中獲取數組？

Answer 1

你可以使用像它

package userinput; 

import java.util.Scanner; 

public class USERINPUT { 

    public static void main(String[] args) { 

     Scanner input = new Scanner(System.in); 

     //allow user input; 
     System.out.println("How many numbers do you want to enter?"); 
     int num = input.nextInt(); 

     int array[] = new int[num]; 

     System.out.println("Enter the " + num + " numbers now."); 

     for (int i = 0 ; i < array.length; i++) { 
      array[i] = input.nextInt(); 
     } 

     //you notice that now the elements have been stored in the array .. array[] 

     System.out.println("These are the numbers you have entered."); 
     printArray(array); 

    } 

    //print the array 
    public static void printArray(int arr[]){ 

     int n = arr.length; 

     for (int i = 0; i < n; i++) { 
      System.out.print(arr[i] + " "); 
     } 
    } 

} 

Answer 2

如何簡單地使用System.console().readLine("Array (use , as separator)? ").split(",")簡單的方法是什麼？然後將其轉換爲int[]數組（有大量的util庫可以這樣做）。