merge2arr.cpp

#include <iostream>
using namespace std;

void MergeSort(int *arr1, int *arr2, int *arr3, int m, int n)
{
    int i = 0, j = 0, k = 0;
    while (i < m && j < n)
    {
        if (arr1[i] < arr2[j])
        {
            arr3[k] = arr1[i];
            i++;
        }
        else
        {
            arr3[k] = arr2[j];
            j++;
        }
        k++;
    }
    while (k < m + n)
    {
        if(i < m){
            arr3[k] = arr1[i];
            i++;
        }
        else{
            arr3[k] = arr2[j];
            j++;
        }
        k++;
    }
    
}
void display(int *arr, int size)
{
    for (size_t i = 0; i < size; i++)
    {
        cout << arr[i] << " ";
    }
}
int main(int argc, char const *argv[])
{
    int arr1[5] = {2, 8,11, 15, 18};
    int m = 5, n = 4;
    int arr2[4] = {5, 9, 12, 17};
    int arr3[9];

    MergeSort(arr1, arr2, arr3, m, n);
    display(arr3,9);
    return 0;
}