77 lines
1.3 KiB
C++
77 lines
1.3 KiB
C++
#ifndef ARRAY_HH
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#define ARRAY_HH
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template<class T>
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class Array {
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public:
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Array(int size, T default_value) : _size(size) {
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_arr = new T[_size] ;
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_default = default_value;
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}
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Array(const Array& other) : _size(other._size) {
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_arr = new T[other._size] ;
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// Copy elements
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for (int i=0 ; i<_size ; i++) {
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_arr[i] = other._arr[i] ;
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}
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}
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~Array() {
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delete[] _arr ;
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}
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Array& operator=(const Array& other)
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{
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if (&other==this) return *this ;
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if (_size != other._size) {
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resize(other._size) ;
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}
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for (int i=0 ; i<_size ; i++) {
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_arr[i] = other._arr[i] ;
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}
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return *this ;
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}
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T& operator[](int index) {
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if ( index > _size ) {
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resize(index+1);
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}
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return _arr[index] ;
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}
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const T& operator[](int index) const {
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return _arr[index] ;
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}
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int size() const { return _size ; }
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void resize(int newSize) {
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// Allocate new array
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T* newArr = new T[newSize] ;
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// Copy elements
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for (int i=0 ; i<_size ; i++) {
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newArr[i] = _arr[i] ;
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}
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for ( int i=_size ; i<newSize ; i++ ) {
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newArr[i] = _default;
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}
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// Delete old array and install new one
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delete[] _arr ;
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_size = newSize ;
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_arr = newArr ;
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}
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private:
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int _size ;
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T* _arr ;
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T _default ;
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} ;
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#endif
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