MFC STL: How can I sort a 'CArray' (or 'CStringArray', 'CIntArray', etc.)?
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    MFC STL: How can I sort a 'CArray' (or 'CStringArray', 'CIntArray', etc.)?

    Q: How can I sort a 'CArray' (or 'CStringArray', 'CIntArray', etc.)?

    A: If the CxxxArray's items can be compared, then use 'std::sort':

    Ascending:

    Code:
    #include <algorithm>
    
    CArray<int, int&> MyCArray;
    CStringArray MyStringArray;
    
    // Sort the CArray of ints
    std::sort(MyCArray.GetData(), MyCArray.GetData() + MyCArray.GetSize());
    
    // Sort the CStringArray
    std::sort(MyStringArray.GetData(), MyStringArray.GetData() + MyStringArray.GetSize());
    Descending:

    You need to supply a comparison function.

    Code:
    #include <algorithm>
    
    bool SortDescendingInt(const int& x, const int& y)
    {
       return x > y;
    }
    
    bool SortDescendingString(const CString& s1, 
                              const CString& s2)
    {
       return s1 > s2;
    }
    
    CArray<int, int> MyCArray;
    CStringArray MyStringArray;
    
    // Sort the CArray of ints
    std::sort(MyCArray.GetData(), 
              MyCArray.GetData() + MyCArray.GetSize(), 
              SortDescendingInt);
    
    // Sort the CStringArray
    std::sort(MyStringArray.GetData(), 
              MyStringArray.GetData() + MyStringArray.GetSize(),
              SortDescendingString);
    FAQ contributed by: [Paul McKenzie]


    Last edited by Andreas Masur; July 24th, 2005 at 04:30 PM.

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