Merge Sorted Array

Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array.

Note:
You may assume that nums1 has enough space (size that is greater or equal to m + n) to hold additional elements from nums2. The number of elements initialized in nums1 and nums2 are m and n respectively.

#include<iostream>
#include<vector>

using namespace std;

class Solution {
public:
    void merge(vector<int>& nums1, int m, vector<int>& nums2, int n) {
        int* aux=new int[m+n];
        for(int i=0;i<m;i++){
            aux[i]=nums1[i];
        }


        for(int i=m;i<m+n;i++){
            aux[i]=nums2[i-m];
        }
        for(int i=0;i<m+n;i++){
            cout<<aux[i]<<" ";
        }
        cout<<endl;

        //merge
        int i=0,j=m;
        for(int k=0;k<m+n;k++){
            if(i>m-1){
                nums1[k]=aux[j];j++;
            } else if(j>m+n-1){
                nums1[k]=aux[i];i++;
            }
            else if(aux[i]<aux[j]){
                nums1[k]=aux[i];i++;
            } else{
                nums1[k]=aux[j];j++;
            } 
        }

        delete[] aux;
    }
};

int main(){
    int arr1[20]={1,2,3,5};
    int arr2[]={5,6,8,9,10};

    vector<int> val1(arr1,arr1+20);
    vector<int> val2(arr2,arr2+sizeof(arr2)/sizeof(int));

    int m=4,n=5;

    Solution().merge(val1,m,val2,n);
    for(int i=0;i<m+n;i++){
        cout<<val1[i]<<" ";
    }
    cout<<endl;


}