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https://github.com/NGSolve/netgen.git
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688 lines
14 KiB
C++
688 lines
14 KiB
C++
#ifndef FILE_Array
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#define FILE_Array
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/**************************************************************************/
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/* File: array.hpp */
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/* Author: Joachim Schoeberl */
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/* Date: 01. Jun. 95 */
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/**************************************************************************/
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namespace netgen
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{
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// template <class T, int B1, int B2> class IndirectArray;
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/**
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A simple array container.
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Array represented by size and data-pointer.
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No memory allocation and deallocation, must be provided by user.
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Helper functions for printing.
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Optional range check by macro RANGE_CHECK
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*/
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template <class T, int BASE = 0>
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class FlatArray
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{
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protected:
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/// the size
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int size;
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/// the data
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T * data;
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public:
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/// provide size and memory
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FlatArray (int asize, T * adata)
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: size(asize), data(adata) { ; }
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/// the size
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int Size() const { return size; }
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int Begin() const { return BASE; }
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int End() const { return size+BASE; }
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/*
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/// access array.
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T & operator[] (int i)
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{
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#ifdef DEBUG
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if (i-BASE < 0 || i-BASE >= size)
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cout << "array<" << typeid(T).name() << "> out of range, i = " << i << ", s = " << size << endl;
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#endif
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return data[i-BASE];
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}
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*/
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/// Access array. BASE-based
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T & operator[] (int i) const
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{
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#ifdef DEBUG
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if (i-BASE < 0 || i-BASE >= size)
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cout << "array<" << typeid(T).name() << "> out of range, i = " << i << ", s = " << size << endl;
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#endif
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return data[i-BASE];
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}
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/*
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template <int B2>
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IndirectArray<T, BASE, B2> operator[] (const FlatArray<int, B2> & ind)
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{ return IndirectArray<T, BASE, B2> (*this, ind); }
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*/
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/// Access array, one-based (old fashioned)
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T & Elem (int i)
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{
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#ifdef DEBUG
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if (i < 1 || i > size)
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cout << "Array<" << typeid(T).name()
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<< ">::Elem out of range, i = " << i
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<< ", s = " << size << endl;
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#endif
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return ((T*)data)[i-1];
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}
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/// Access array, one-based (old fashioned)
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const T & Get (int i) const
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{
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#ifdef DEBUG
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if (i < 1 || i > size)
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cout << "Array<" << typeid(T).name() << ">::Get out of range, i = " << i
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<< ", s = " << size << endl;
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#endif
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return ((const T*)data)[i-1];
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}
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/// Access array, one-based (old fashioned)
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void Set (int i, const T & el)
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{
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#ifdef DEBUG
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if (i < 1 || i > size)
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cout << "Array<" << typeid(T).name() << ">::Set out of range, i = " << i
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<< ", s = " << size << endl;
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#endif
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((T*)data)[i-1] = el;
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}
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/// access first element
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T & First () const
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{
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return data[0];
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}
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/// access last element. check by macro CHECK_RANGE
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T & Last () const
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{
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return data[size-1];
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}
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/// Fill array with value val
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FlatArray & operator= (const T & val)
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{
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for (int i = 0; i < size; i++)
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data[i] = val;
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return *this;
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}
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/// takes range starting from position start of end-start elements
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const FlatArray<T> Range (int start, int end)
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{
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return FlatArray<T> (end-start, data+start);
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}
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/// first position of element elem, returns -1 if element not contained in array
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int Pos(const T & elem) const
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{
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int pos = -1;
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for(int i=0; pos==-1 && i < this->size; i++)
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if(elem == data[i]) pos = i;
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return pos;
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}
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/// does the array contain element elem ?
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bool Contains(const T & elem) const
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{
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return ( Pos(elem) >= 0 );
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}
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};
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// print array
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template <class T, int BASE>
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inline ostream & operator<< (ostream & s, const FlatArray<T,BASE> & a)
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{
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for (int i = a.Begin(); i < a.End(); i++)
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s << i << ": " << a[i] << endl;
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return s;
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}
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/**
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Dynamic array container.
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Array<T> is an automatically increasing array container.
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The allocated memory doubles on overflow.
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Either the container takes care of memory allocation and deallocation,
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or the user provides one block of data.
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*/
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template <class T, int BASE = 0>
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class Array : public FlatArray<T, BASE>
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{
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protected:
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/// physical size of array
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int allocsize;
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/// memory is responsibility of container
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bool ownmem;
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public:
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/// Generate array of logical and physical size asize
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explicit Array(int asize = 0)
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: FlatArray<T, BASE> (asize, asize ? new T[asize] : 0)
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{
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allocsize = asize;
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ownmem = 1;
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}
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/// Generate array in user data
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Array(int asize, T* adata)
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: FlatArray<T, BASE> (asize, adata)
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{
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allocsize = asize;
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ownmem = 0;
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}
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/// array copy
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explicit Array (const Array<T> & a2)
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: FlatArray<T, BASE> (a2.Size(), a2.Size() ? new T[a2.Size()] : 0)
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{
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allocsize = this->size;
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ownmem = 1;
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for (int i = BASE; i < this->size+BASE; i++)
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(*this)[i] = a2[i];
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}
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/// if responsible, deletes memory
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~Array()
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{
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if (ownmem)
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delete [] this->data;
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}
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/// Change logical size. If necessary, do reallocation. Keeps contents.
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void SetSize(int nsize)
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{
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if (nsize > allocsize)
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ReSize (nsize);
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this->size = nsize;
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}
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/// Change physical size. Keeps logical size. Keeps contents.
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void SetAllocSize (int nallocsize)
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{
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if (nallocsize > allocsize)
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ReSize (nallocsize);
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}
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/// Add element at end of array. reallocation if necessary.
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int Append (const T & el)
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{
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if (this->size == allocsize)
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ReSize (this->size+1);
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this->data[this->size] = el;
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this->size++;
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return this->size;
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}
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template <typename T2, int B2>
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void Append (FlatArray<T2, B2> a2)
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{
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if (this->size+a2.Size() > allocsize)
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ReSize (this->size+a2.Size());
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for (int i = 0; i < a2.Size(); i++)
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this->data[this->size+i] = a2[i+B2];
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this->size += a2.Size();
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}
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/*
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template <int B1, int B2>
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void Append (const IndirectArray<T,B1,B2> & a2)
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{
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if (this->size+a2.Size() > allocsize)
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ReSize (this->size+a2.Size());
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for (int i = 0; i < a2.Size(); i++)
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this->data[this->size+i] = a2[i+B2];
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this->size += a2.Size();
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}
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*/
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/// Delete element i (0-based). Move last element to position i.
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void Delete (int i)
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{
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#ifdef CHECK_Array_RANGE
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RangeCheck (i+1);
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#endif
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this->data[i] = this->data[this->size-1];
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this->size--;
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// DeleteElement (i+1);
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}
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/// Delete element i (1-based). Move last element to position i.
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void DeleteElement (int i)
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{
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#ifdef CHECK_Array_RANGE
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RangeCheck (i);
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#endif
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this->data[i-1] = this->data[this->size-1];
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this->size--;
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}
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/// Delete last element.
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void DeleteLast ()
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{
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this->size--;
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}
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/// Deallocate memory
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void DeleteAll ()
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{
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if (ownmem)
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delete [] this->data;
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this->data = 0;
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this->size = allocsize = 0;
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}
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/// Fill array with val
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Array & operator= (const T & val)
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{
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FlatArray<T, BASE>::operator= (val);
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return *this;
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}
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/// array copy
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Array & operator= (const Array & a2)
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{
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SetSize (a2.Size());
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for (int i = BASE; i < this->size+BASE; i++)
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(*this)[i] = a2[i];
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return *this;
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}
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/// array copy
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Array & operator= (const FlatArray<T> & a2)
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{
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SetSize (a2.Size());
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for (int i = BASE; i < this->size+BASE; i++)
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(*this)[i] = a2[i];
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return *this;
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}
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private:
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/// resize array, at least to size minsize. copy contents
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void ReSize (int minsize)
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{
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int nsize = 2 * allocsize;
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if (nsize < minsize) nsize = minsize;
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if (this->data)
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{
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T * p = new T[nsize];
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int mins = (nsize < this->size) ? nsize : this->size;
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memcpy (p, this->data, mins * sizeof(T));
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if (ownmem)
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delete [] this->data;
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ownmem = 1;
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this->data = p;
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}
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else
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{
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this->data = new T[nsize];
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ownmem = 1;
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}
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allocsize = nsize;
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}
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};
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template <class T, int S>
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class ArrayMem : public Array<T>
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{
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// T mem[S]; // Intel C++ calls dummy constructor
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// char mem[S*sizeof(T)];
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double mem[(S*sizeof(T)+7) / 8];
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public:
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/// Generate array of logical and physical size asize
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explicit ArrayMem(int asize = 0)
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: Array<T> (S, static_cast<T*> (static_cast<void*>(&mem[0])))
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{
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this->size = asize;
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if (asize > S)
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{
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this->data = new T[asize];
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this->ownmem = 1;
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}
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// this->SetSize (asize);
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}
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ArrayMem & operator= (const T & val)
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{
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Array<T>::operator= (val);
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return *this;
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}
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/// array copy
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ArrayMem & operator= (const FlatArray<T> & a2)
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{
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SetSize (a2.Size());
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for (int i = 0; i < this->size; i++)
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(*this)[i] = a2[i];
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return *this;
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}
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};
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/*
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template <class T, int B1, int B2>
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class IndirectArray
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{
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const FlatArray<T, B1> & array;
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const FlatArray<int, B2> & ia;
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public:
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IndirectArray (const FlatArray<T,B1> & aa, const FlatArray<int, B2> & aia)
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: array(aa), ia(aia) { ; }
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int Size() const { return ia.Size(); }
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const T & operator[] (int i) const { return array[ia[i]]; }
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};
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*/
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///
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template <class T, int BASE = 0>
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class MoveableArray
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{
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int size;
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int allocsize;
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DynamicMem<T> data;
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public:
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MoveableArray()
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{
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size = allocsize = 0;
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data.SetName ("MoveableArray");
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}
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MoveableArray(int asize)
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: size(asize), allocsize(asize), data(asize)
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{ ; }
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~MoveableArray () { ; }
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int Size() const { return size; }
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void SetSize(int nsize)
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{
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if (nsize > allocsize)
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{
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data.ReAlloc (nsize);
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allocsize = nsize;
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}
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size = nsize;
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}
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void SetAllocSize (int nallocsize)
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{
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data.ReAlloc (nallocsize);
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allocsize = nallocsize;
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}
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///
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T & operator[] (int i)
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{ return ((T*)data)[i-BASE]; }
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///
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const T & operator[] (int i) const
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{ return ((const T*)data)[i-BASE]; }
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///
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T & Elem (int i)
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{ return ((T*)data)[i-1]; }
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///
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const T & Get (int i) const
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{ return ((const T*)data)[i-1]; }
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///
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void Set (int i, const T & el)
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{ ((T*)data)[i-1] = el; }
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///
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T & Last ()
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{ return ((T*)data)[size-1]; }
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///
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const T & Last () const
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{ return ((const T*)data)[size-1]; }
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///
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int Append (const T & el)
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{
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if (size == allocsize)
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{
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SetAllocSize (2*allocsize+1);
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}
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((T*)data)[size] = el;
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size++;
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return size;
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}
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///
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void Delete (int i)
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{
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DeleteElement (i+1);
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}
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///
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void DeleteElement (int i)
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{
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((T*)data)[i-1] = ((T*)data)[size-1];
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size--;
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}
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///
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void DeleteLast ()
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{ size--; }
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///
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void DeleteAll ()
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{
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size = allocsize = 0;
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data.Free();
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}
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///
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void PrintMemInfo (ostream & ost) const
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{
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ost << Size() << " elements of size " << sizeof(T) << " = "
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<< Size() * sizeof(T) << endl;
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}
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MoveableArray & operator= (const T & el)
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{
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for (int i = 0; i < size; i++)
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((T*)data)[i] = el;
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return *this;
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}
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MoveableArray & Copy (const MoveableArray & a2)
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{
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SetSize (a2.Size());
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for (int i = 0; i < this->size; i++)
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data[i] = a2.data[i];
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return *this;
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}
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/// array copy
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MoveableArray & operator= (const MoveableArray & a2)
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{
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return Copy(a2);
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}
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void SetName (const char * aname)
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{
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data.SetName(aname);
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}
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private:
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///
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//MoveableArray & operator= (MoveableArray &); //???
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///
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//MoveableArray (const MoveableArray &); //???
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};
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template <class T>
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inline ostream & operator<< (ostream & ost, MoveableArray<T> & a)
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{
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for (int i = 0; i < a.Size(); i++)
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ost << i << ": " << a[i] << endl;
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return ost;
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}
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/// bubble sort array
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template <class T>
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inline void BubbleSort (const FlatArray<T> & data)
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{
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for (int i = 0; i < data.Size(); i++)
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for (int j = i+1; j < data.Size(); j++)
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if (data[i] > data[j])
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{
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T hv = data[i];
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data[i] = data[j];
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data[j] = hv;
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}
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}
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/// bubble sort array
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template <class T, class S>
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inline void BubbleSort (FlatArray<T> & data, FlatArray<S> & slave)
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{
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for (int i = 0; i < data.Size(); i++)
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for (int j = i+1; j < data.Size(); j++)
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if (data[i] > data[j])
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{
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T hv = data[i];
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data[i] = data[j];
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data[j] = hv;
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S hvs = slave[i];
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slave[i] = slave[j];
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slave[j] = hvs;
|
|
}
|
|
}
|
|
|
|
|
|
template <class T, class S>
|
|
void QuickSortRec (FlatArray<T> & data,
|
|
FlatArray<S> & slave,
|
|
int left, int right)
|
|
{
|
|
int i = left;
|
|
int j = right;
|
|
T midval = data[(left+right)/2];
|
|
|
|
do
|
|
{
|
|
while (data[i] < midval) i++;
|
|
while (midval < data[j]) j--;
|
|
|
|
if (i <= j)
|
|
{
|
|
Swap (data[i], data[j]);
|
|
Swap (slave[i], slave[j]);
|
|
i++; j--;
|
|
}
|
|
}
|
|
while (i <= j);
|
|
if (left < j) QuickSortRec (data, slave, left, j);
|
|
if (i < right) QuickSortRec (data, slave, i, right);
|
|
}
|
|
|
|
template <class T, class S>
|
|
void QuickSort (FlatArray<T> & data, FlatArray<S> & slave)
|
|
{
|
|
QuickSortRec (data, slave, 0, data.Size()-1);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
template <class T>
|
|
void Intersection (const FlatArray<T> & in1, const FlatArray<T> & in2,
|
|
Array<T> & out)
|
|
{
|
|
out.SetSize(0);
|
|
for(int i=0; i<in1.Size(); i++)
|
|
if(in2.Contains(in1[i]))
|
|
out.Append(in1[i]);
|
|
}
|
|
template <class T>
|
|
void Intersection (const FlatArray<T> & in1, const FlatArray<T> & in2, const FlatArray<T> & in3,
|
|
Array<T> & out)
|
|
{
|
|
out.SetSize(0);
|
|
for(int i=0; i<in1.Size(); i++)
|
|
if(in2.Contains(in1[i]) && in3.Contains(in1[i]))
|
|
out.Append(in1[i]);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
#endif
|
|
|