From Forum Nokia Wiki

The implementation below shows the creation to two dimensional integer array in symbian. The diagrammatic structure of implementation is given below for clear explanation.

Header File

#ifndef __TWODIMENSIONAL_H__
#define __TWODIMENSIONAL_H__
 
#include <e32std.h>
 
typedef RArray<TInt> RIntegerArray;
 
class R2DIntArray: public RPointerArray <RIntegerArray>
{
public:
    ~R2DIntArray();
    void ResetAndDestroy();
    inline TInt& At(TInt a1, TInt a2) { return (*((*this)[a1]))[a2]; }
	TInt Find(TInt aInteger);
	void Add(TInt aInteger);
 
	void AppendLast(TInt aPosition, TInt aValue);
 
};
#endif

Functions Implementation

// destructor
R2DIntArray::~R2DIntArray()
	{
	ResetAndDestroy();
	};
 
void R2DIntArray::ResetAndDestroy()
	{
	for (TInt i=0; i<Count(); i++) 
 
	{
 
		(*this)[i]->Reset();
 
	}
	RPointerArray<RIntegerArray>::ResetAndDestroy();
	};
 
 
 
// Finding the particular  integer value
 
TInt R2DIntArray::Find(TInt aInteger)
	{
	for (TInt i=0; i<Count(); i++)
		if (aInteger == (*((*this)[i]))[0])
			return i;
	return KErrNotFound;
	}
 
 
// adding the entry
void R2DIntArray::Add(TInt aInteger)
	{
	Append(new RIntegerArray);
	(*this)[Count() - 1]->Append(aInteger);
	}
 
// Appending the entry
 
void R2DIntArray::AppendLast(TInt aPosition, TInt aValue)
	{
	(*this)[aPosition]->Append(aValue);
	}

Two Dimensional Array Usage

R2DIntArray 2DArray;
2DArray.Reset();
2DArray.At(j,0)
2DArray.At(j,1)
2DArray.Count()
 
TInt j= 0 ; // value less than count of array.
TInt word = 25 // Any integer value.
 
RPointerArray<R2DIntArray> 2DPtrArray;
2DPtrArray.Append(new R2DIntArray);
2DPtrArray[0]->At(j,1); // refer to diagram  above for clear understanting 
TInt retWord = 2DPtrArray[0]->Find(word);
if(retWord != KErrNotFound)
{
   // you got the  index of the  searched word
}

• RPointerArray<R2DIntArray> 2DPtrArray

( j ) -> ( 0 )( 1 )

[ 0 ] -> [ 0 ][20]

[ 1 ] -> [ 1 ][25]

[ 2 ] -> [ 2 ][35]

[ 3 ] -> [ 3 ][45]

• R2DIntArray 2DArray

( 0 )( 1 )

[ 0 ][20]

[ 1 ][25]

[ 2 ][35]

[ 3 ][45]