c++ - 如何找到两个不同数组中交换的值？

Question

我想用一个数组中的赔率和另一个数组中的偶数交换一个数组，同时跟踪计数和被交换的值。

{2, 3, 6}
{1, 4, 7}

will become

{1, 3, 7}
{2, 4, 6}

有 2 次交换，被交换的值是1 &2, 6 & 7.

int main() {
    int a1[3] = { 2, 3, 6 };
    int a2[3] = { 1, 4, 7 };
    int i;
    int swapcount = 0;
    int swapvalue;

    std::cout << "Before swap:\n" << endl;
    std::cout << "Array 1:\n" << endl;
    for (int i = 0; i < 3; i++) {
        cout << " " << a1[i] << endl;

    }
    std::cout << "Array 2:\n" << endl;
    for (int i = 0; i < 3; i++) {
        std::cout << " " << a2[i] << endl;

    }

    for (int i = 0; i < 3; i++) {
        if (a1[i] % 2 != 1) {
            swapcount++;
            int temp = a1[i];
            a1[i] = a2[i];
            a2[i] = temp;
            swapvalue = i;
        }
    }

    std::cout << "After swap:\n" << endl;
    std::cout << "Array 1:\n" << endl;
    for (int i = 0; i < 3; i++) {
        std::cout << " " << a1[i] << endl;
    }

    std::cout << "Array 2:\n" << endl;
    for (int i = 0; i < 3; i++) {
        std::cout << " " << a2[i] << endl;

    }

    std::cout << "swap count: " << swapcount << endl;
    std::cout << "swap value: " << swapvalue << endl;
}

到目前为止，我已经让 swap 和 counter 正常工作，但我似乎无法弄清楚:

如何查找和存储交换元素的各个值？ (我只能得到一个值来显示。)

我能得到任何关于如何获取所有值的提示吗？除了输入和输出流，我不允许使用任何额外的库。提前致谢。

Answer 1

创建一个辅助数组 swapbool，如果交换完成则设置 boolean = 1。

#include<iostream>
using namespace std;
int main() {
    int a1[3] = { 2, 3, 6 };
    int a2[3] = { 1, 4, 7 };
    int swapbool[3] = {0,0,0};
    int i;
    int swapcount = 0;
    int swapvalue;

    std::cout << "Before swap:\n" << endl;
    std::cout << "Array 1:\n" << endl;
    for (int i = 0; i < 3; i++) {
        cout << " " << a1[i] << endl;

    }
    std::cout << "Array 2:\n" << endl;
    for (int i = 0; i < 3; i++) {
        std::cout << " " << a2[i] << endl;

    }

    for (int i = 0; i < 3; i++) {
        if (a1[i] % 2 != 1) {
            swapcount++;
            int temp = a1[i];
            a1[i] = a2[i];
            a2[i] = temp;
           // swapvalue = i;
            swapbool[i]=1;
        }
    }

    std::cout << "After swap:\n" << endl;
    std::cout << "Array 1:\n" << endl;
    for (int i = 0; i < 3; i++) {
        std::cout << " " << a1[i] << endl;
    }

    std::cout << "Array 2:\n" << endl;
    for (int i = 0; i < 3; i++) {
        std::cout << " " << a2[i] << endl;

    }

    std::cout << "swap count: " << swapcount << endl;
    for (int i = 0; i < 3; i++) {
        if(swapbool[i] == 1)
        {
            std::cout << "swapvalue1-> " << a2[i] << endl;
            std::cout << "swapvalue2-> " << a1[i] << endl;
        }
    }

    //std::cout << "swap value: " << swapvalue << endl;
}