How To Solve 4.4

1.C++

#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
    int a[20],n;
    cout<<"Batas : ";
    cin>>n;
    
    for (int i=0;i<n;i++){
    cout<<"Data : ";
    cin>>a[i];
}
    for (int i=0;i<n;i++){
    if(a[i]==a[i+1])
    cout<<a[i];
    else if(a[i-1]==a[i])
    cout<<"";
    else if(a[i]==a[i+2])
    cout<<a[i];
    else if(a[i-2]==a[i])
    cout<<"";
    else if(a[i]==a[i+3])
    cout<<a[i];
    else if(a[i-3]==a[i])
    cout<<"";
    else if(a[i]==a[i+4])
    cout<<a[i];
    else if(a[i-4]==a[i])
    cout<<"";
    else if(a[i]==a[i+5])
    cout<<a[i];
    else if(a[i-5]==a[i])
    cout<<"";
    
    else 
    cout<<a[i];
}

/*    for (int i=0;i<n;i++){ 
        cout<<a[i]<<" ";        
    
    
    }*/
    
    return 0;
}