Remove Duplicates From Vector Template Example




#include <vector>
#include <algorithm>
using namespace std;
// Add this header files

/*
Template function to Remove Duplicates
From a vector */

template <class T>
void RemoveDuplicates(vector<T> &vecContents)
{
    vector<T> ::iterator vItr;
  
    sort(vecContents.begin(),vecContents.end());
    vItr=unique(vecContents.begin(),vecContents.end());   
    if(vItr!=vecContents.end())
         vecContents.erase(vItr,vecContents.end());
}




//Usage Example 1

vector<CString> vNames; 
vNames.push_back("John");
vNames.push_back("Victor");
vNames.push_back("Nancy"); 
vNames.push_back("William");
vNames.push_back("Nancy");

RemoveDuplicates(vNames); 


//Usage Example 2
vector<int> vNos;   
vNos.push_back(1);
vNos.push_back(1);
vNos.push_back(4);

RemoveDuplicates(vNos);

String Cstring comparision




/*
string and CSting Find, mid, left funtion
Example and comparison.
*/


#include <string>      //string
using namespace std;     //string


string strSample,strLeft,strRight,str;
size_t pos=0;
strSample="This is my sample";

pos=strSample.find("my");
if(pos!=string::npos)
{
     strLeft=strSample.substr(0,pos);    
     //This is 

     strRight=strSample.substr(pos);         
     //my sample

     str=strSample.substr(pos+strlen("my"));    
     // sample
}


CString csSample,csLeft,csRight,csStr;
int nPos=-1;
csSample="This is my sample";
if( (nPos=csSample.Find("my"))>-1)
{
     csLeft=csSample.Left(nPos);         
     //This is 

     csRight=csSample.Mid(nPos);         
     //my sample

     csStr=csSample.Mid(nPos+_tcslen("my"));
     // sample

}

Removing Duplicates from STL Vector

#include <vector>
#include <algorithm>
using namespace std;
// Add this header files


vector<CString> vNames;   
vector<CString> ::iterator vItr;
CString csName;

vNames.push_back("John");
vNames.push_back("Victor");
vNames.push_back("Nancy");   
vNames.push_back("William");
vNames.push_back("Nancy");
sort(vNames.begin(),vNames.end());
vNames.erase(unique(vNames.begin(),vNames.end()),vNames.end());   

for(vItr=vNames.begin();vItr!=vNames.end();vItr++)
{
    csName=(*vItr);
    //TRACE(csName);
    //AfxMessageBox(csName);
}