使用循环和控制结构显示所有奇数和偶数的总和

Question

我需要创建一个 Java 程序，它将接受 10 个整数，如果输入的数字是奇数，则将其提升到 ^1 次方，如果用户输入另一个奇数，则再次将其提升到下一个次方 ^2，与偶数相同但是，功率从 10 开始，并且在输入的每个偶数中都会减少。之后，我必须显示所有偶数和奇数的总和。

难的是不允许使用数组和java.util.Math。

例如：

程序要求用户输入10个整数：

用户输入（整数 1-10）：

1 ^ 1 = 1（奇数）

2 ^ 10 = 1024（偶数）

3 ^ 2 = 9（奇数）

4 ^ 9 = 262 114（偶数）

5 ^ 3 = 125（奇数）

6 ^ 8 = 1 679 616（偶数）

7 ^ 4 = 2 401（奇数）

8 ^ 7 = 2 097 152（偶数）

9 ^ 5 = 59 049（奇数）

10 ^ 6 = 1 000 000（偶数）

输出： 偶次幂之和

奇数次幂的总和

感谢 Devon，我尝试运行程序但出现逻辑错误。

public class SumOfOddEvenMain {

public static void main(String[] args) {
    SumOfOddEven temp = new SumOfOddEven();
    System.out.println(temp.Run());
}

}

import java.util.Scanner;

public class SumOfOddEven {
private long sumOfOdds;
private long sumOfEvens;
private int countOfOdds;
private int countOfEvens;

public SumOfOddEven() {
    countOfOdds = 1;
    countOfEvens = 10;
    sumOfOdds = 0;
    sumOfEvens = 0;
}
public String Run() {
    Scanner in = new Scanner(System.in);

    for(int i = 0; i < 10; i++){
        System.out.println("Enter integer number " + i);
        int number = in.nextInt();

        if(number % 2 == 0) {
            for(int j = countOfEvens; j > 1; j--) {
                number *= number;
            }

            sumOfEvens += number;
            countOfEvens--;
        }
        else {
            for(int k = countOfOdds; k > 1; k--) {
                number *= number;
            }

            sumOfOdds += number;
            countOfOdds++;
        }
    }

    in.close();
    return "Sum of odds: " + sumOfOdds + "\nSum of evens: " + sumOfEvens;
}

}

程序输出：

Enter integer number 0
1
Enter integer number 1
2
Enter integer number 2
3
Enter integer number 3
4
Enter integer number 4
5
Enter integer number 5
6
Enter integer number 6
7
Enter integer number 7
8
Enter integer number 8
9
Enter integer number 9
10
Sum of odds: -495568963
Sum of evens: 0

Answer 1

你可以这样做：

import java.util.Scanner;

public class SumOfOddEven {    
    public static void main(String[] args) {
        int sumOddInts = 0, sumEvenInts = 0, countOddInts = 1, countEvenInts = 10;
        Scanner in = new Scanner(System.in);
        for (int i = 1; i <= 10; i++) {
            System.out.println("Count: " + i + ", enter an integer (from 1 to 10): ");
            int number;
            do {
                number = in.nextInt();
                if (!(number >= 0 && number <= 10)) {
                    System.out.println("Try again, enter an integer (from 1 to 10): ");
                } else {
                    if (number % 2 == 0) {
                        sumEvenInts += power(number, countEvenInts--);
                    } else {
                        sumOddInts += power(number, countOddInts++);
                    }
                }
            } while (!(number >= 0 && number <= 10));
        }
        in.close();
        System.out.println("The sum of even powered: " + sumEvenInts);
        System.out.println("The sum of odd powered: " + sumOddInts);
    }

    static int power(int n, int power) {
        int num = 1;
        for (int i = 1; i <= power; i++) {
            num *= n;
        }
        return num;
    }
}

注意：上面给出的程序将数字限制为1到10，以避免整数溢出

示例运行：

Count: 1, enter an integer (from 1 to 10): 
12
Try again, enter an integer (from 1 to 10): 
3
Count: 2, enter an integer (from 1 to 10): 
5
Count: 3, enter an integer (from 1 to 10): 
6
Count: 4, enter an integer (from 1 to 10): 
7
Count: 5, enter an integer (from 1 to 10): 
8
Count: 6, enter an integer (from 1 to 10): 
2
Count: 7, enter an integer (from 1 to 10): 
1
Count: 8, enter an integer (from 1 to 10): 
9
Count: 9, enter an integer (from 1 to 10): 
10
Count: 10, enter an integer (from 1 to 10): 
4
The sum of even powered: 204688256
The sum of odd powered: 59421

Answer 2

public class SumOfOddEven {
    private long sumOfOdds;
    private long sumOfEvens;
    private int countOfOdds;
    private int countOfEvens;

    public SumOfOddEven() {
        countOfOdds = 1;
        countOfEvens = 10;
        sumOfOdds = 0;
        sumOfEvens = 0;
    }
    public String Run() {
        Scanner in = new Scanner(System.in);

        for(int i = 0; i < 10; i++){
            System.out.println("Enter integer number " + i);
            long number = in.nextLong();

            if(number % 2 == 0) {
                for(int j = countOfEvens; j >= 1; j--) {
                    number *= number;
                }

                sumOfEvens += number; 
                countOfEvens--;
            }
            else {
                for(int k = countOfOdds; k >= 1; k--) {
                    number *= number;
                }

                sumOfOdds += number;
                countOfOdds++;
            }
        }

        in.close();
        return "Sum of odds: " + sumOfOdds + "\nSum of evens: " + sumOfEvens; 
    }

}

然后在主要的：

public static void main(String[] args) {
    SumOfOddEven temp = new SumOfOddEven();
    System.out.println(temp.Run());
}

您可以通过简单的条件来检查输入是否有效，以查看输入是否为整数或分配要求检查的任何其他规定。如果该条件为真，则只需让 Run() 再次调用自身并重置计数变量。