在C特殊情况下组合2个数组

#include <stdio.h>

void combineArrays(int arr1[], int arr2[], int size1, int size2) {
    int combinedSize = size1 + size2;
    int combined[combinedSize];
    int i, j, k;

    // 交替将两个数组的元素放入新数组中
    for (i = 0, j = 0, k = 0; i < combinedSize; i++) {
        if (i % 2 == 0 && j < size1) {
            combined[i] = arr1[j];
            j++;
        } else if (k < size2) {
            combined[i] = arr2[k];
            k++;
        }
    }

    // 打印组合后的数组
    for (i = 0; i < combinedSize; i++) {
        printf("%d ", combined[i]);
    }
}

int main() {
    int arr1[] = {1, 2, 3};
    int arr2[] = {4, 5, 6, 7};
    int size1 = sizeof(arr1) / sizeof(arr1[0]);
    int size2 = sizeof(arr2) / sizeof(arr2[0]);

    combineArrays(arr1, arr2, size1, size2);

    return 0;
}

#include <stdio.h>
#include <stdlib.h>

int* combineArrays(int arr1[], int arr2[], int size1, int size2) {
    int combinedSize = size1 + size2;
    int* combined = (int*)malloc(combinedSize * sizeof(int));
    int i, j, k;

    // 交替将两个数组的元素放入新数组中
    for (i = 0, j = 0, k = 0; i < combinedSize; i++) {
        if (i % 2 == 0 && j < size1) {
            combined[i] = arr1[j];
            j++;
        } else if (k < size2) {
            combined[i] = arr2[k];
            k++;
        }
    }

    return combined;
}

int main() {
    int arr1[] = {1, 2, 3};
    int arr2[] = {4, 5, 6, 7};
    int size1 = sizeof(arr1) / sizeof(arr1[0]);
    int size2 = sizeof(arr2) / sizeof(arr2[0]);

    int* combined = combineArrays(arr1, arr2, size1, size2);

    // 打印组合后的数组
    for (int i = 0; i < size1 + size2; i++) {
        printf("%d ", combined[i]);
    }

    free(combined); // 释放内存

    return 0;
}