#include <stdio.h>
int Union(int arr1[], int arr2[], int m, int n)
{
    int i = 0, j = 0;
    while (i < m && j < n)
    {
        if (arr1[i] < arr2[j])
            printf(" %d ", arr1[i++]);
        else if (arr2[j] < arr1[i])
            printf(" %d ", arr2[j++]);
        else
        {
            printf(" %d ", arr2[j++]);
            i++;
        }
    }

    while (i < m)
        printf(" %d ", arr1[i++]);
    while (j < n)
        printf(" %d ", arr2[j++]);
    return 0;
}

int main()
{
    int arr1[] = {1, 2 ,3, 5, 6};
    int arr2[] = {2, 3, 5, 7};
    int m = sizeof(arr1) / sizeof(arr1[0]);
    int n = sizeof(arr2) / sizeof(arr2[0]);
    Union(arr1, arr2, m, n);
    getchar();
    return 0;
}