這只是一些作業，但我無法找到一種方法來實現它。請看看我的代碼。輸入數字后，我只想玩弄它們。public static void main(String[] args) { Scanner sc = new Scanner(System.in); //user says if he'd like to use 3 numbers for instance (2,4,5) System.out.println("How many numbers would you like to use? : "); int amountOfNumbers = sc.nextInt(); System.out.println("Great! Please type in your numbers: "); int numbers =sc.nextInt(amountOfNumbers); // should let him write the amount of numbers he entered }一旦他輸入了他想要使用的數字數量，我希望掃描儀能夠讓他輸入所有這些數字。假設他想使用的號碼數量是三個。我希望他能夠像這樣在控制臺中輸入：第一個數字 + 回車鍵第二個數字 + 輸入鍵第三個數字+回車鍵寫不下去了這就是我在這里通過在掃描儀本身中添加“amountOfNumbers”的意思......（這是行不通的）int numbers =sc.nextInt(amountOfNumbers);BR
2 回答
波斯汪
TA貢獻1811條經驗 獲得超4個贊
考慮一個for循環：
for(int i = 0; i < amountofNumbers; i++){
// add to a collection / array / list
}然后從那里訪問您需要的內容。
慕村9548890
TA貢獻1884條經驗 獲得超4個贊
import java.util.*;
class EnterNumber{
public void enter_list_function(){
Scanner sc = new Scanner(System.in);
System.out.println("How many numbers would you like to use?");
//Enter the Numbers of amount
int input = sc.nextInt();
ArrayList<Integer> list = new ArrayList<Integer>();
System.out.println("Great! Please type in your numbers: ");
//Input - Numbers of amount
for(int j =1; j<=input; j++ ){
int addval = sc.nextInt();
//Add the enter amount in array
list.add(addval);
}
Iterator itr=list.iterator();
while(itr.hasNext()){
//get the enter amount from list
System.out.println(itr.next());
}
}
public static void main(String[] args){
EnterNumber EnterNumber = new EnterNumber();
EnterNumber.enter_list_function();
}
}
添加回答
舉報
0/150
提交
取消