如何将正值和负值（可能是分开的？）存储到数组中，并打印出来？

Question

我的程序会要求用户输入 10 个数字。正数被视为存款，负数被视为提款。完成后，程序应打印出用户输入的金额。

我的问题是我无法设置将它们存储到数组中的逻辑。我不知道如何将正值和负值分离到一个数组中。

这是我目前所做的：

package depandwith;

import java.util.*;
public class DepAndWith {

        public static void main(String[] args) {
            Scanner input = new Scanner(System.in);

            System.out.println("TO DEPOSIT USE POSITIVE AND, TO WITHDRAW USE NEGATIVE VALUE.\n\n");
            for (int i = 0; i < 10; i++) {
                System.out.println("Enter amount: ");
                int amount[] = new int[10];
                amount[i] = input.nextInt();

                if (amount[i] >= 0) {
                    //store it as deposited
                } else {//if the amount is negative
                    //store it as withdrawn

                }

            }

            //Printing the amounts:
            for (int i = 0; i < 10; i++) {
                System.out.println("Print out Deposited amount");
                System.out.println("Print out Withdrawn amount");

            }

        }
}

Answer 1

首先，您要在每次迭代时创建一个新数组。移动行

int amount[] = new int[10];

到循环外。

其次，您不需要以不同方式处理它，您可以将任何 int 数字存储在 int 数组中。

如果您坚持要分隔 pos/neg 个数字，请创建两个数组，然后分隔..我看不出有任何理由在您的情况下这样做。

Answer 2

您要做的是正常存储它们。打印时注意它。

package depandwith;

import java.util.*;
public class DepAndWith {
    public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    System.out.println("TO DEPOSIT USE POSITIVE AND, TO WITHDRAW USE NEGATIVE VALUE.\n\n");
    int amount[] = new int[10];
        for (int i = 0; i < 10; i++) {
            System.out.println("Enter amount: ");
            amount[i] = input.nextInt();
        }

        //Printing the deposit amounts:
        for (int i = 0; i < 10; i++) {
            System.out.print("Print out Deposited amount");
            if(amount[i]>0){
                System.out.print(amount[i]+", ")
            }
        }
        System.out.println();
        //Printing the withdraw amounts:
        for (int i = 0; i < 10; i++) {
            System.out.println("Print out Withdraw amount");
            if(amount[i]<0){
                System.out.print(amount[i]+", ")
            }
        }
    }
}

如何将正值和负值（可能是分开的？）存储到数组中，并打印出来？

How do I store positive and negative value (may be separately?) into an array, and print them out?

java

arrays

loops

for-loop

java.util.scanner