Holds the coefficients of pascal's triangle up to n = 3. More...
#include <pascals_triangle.hpp>
Public Types | |
typedef Array< int, 10 >::const_iterator | const_iterator |
Utilise the array's iterator for parsing the triangle. More... | |
Public Member Functions | |
const_iterator | begin (unsigned int index=0) const |
Iterator generator for diagonals of pascals triangle [begin]. More... | |
const_iterator | end (unsigned int index=0) const |
Iterator generator for diagonals of pascals triangle [begin]. More... | |
PascalsTriangle () | |
Default constructor. More... | |
virtual | ~PascalsTriangle () |
Private Attributes | |
Array< int, 10 > | coefficients |
Friends | |
template<typename OutputStream > | |
OutputStream & | operator<< (OutputStream &ostream, const PascalsTriangle< 3 > &triangle) |
Insertion operator for streaming output from pascal's triangle of degree 3. More... | |
Holds the coefficients of pascal's triangle up to n = 3.
Stores the coefficients of all diagonals up until row 3 - i.e. all coefficients up to and including those for (x+y)^0 to (x+y)^3. This is used fairly often, so defined here to avoid the slow calculation of the general case.
Definition at line 95 of file pascals_triangle.hpp.
typedef Array<int,10>::const_iterator ecl::PascalsTriangle< 3 >::const_iterator |
Utilise the array's iterator for parsing the triangle.
Definition at line 107 of file pascals_triangle.hpp.
ecl::PascalsTriangle< 3 >::PascalsTriangle | ( | ) |
Default constructor.
This constructor speeds things up by initialising the triangle internally with the coefficients directly.
Definition at line 24 of file pascals_triangle.cpp.
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inlinevirtual |
Definition at line 107 of file pascals_triangle.hpp.
PascalsTriangle< 3 >::const_iterator ecl::PascalsTriangle< 3 >::begin | ( | unsigned int | index = 0 | ) | const |
Iterator generator for diagonals of pascals triangle [begin].
Return a const iterator pointing to the first element of the specified diagonal.
index | : the diagonal to be iterated. |
Definition at line 31 of file pascals_triangle.cpp.
PascalsTriangle< 3 >::const_iterator ecl::PascalsTriangle< 3 >::end | ( | unsigned int | index = 0 | ) | const |
Iterator generator for diagonals of pascals triangle [begin].
Return a const iterator just past the last element of the specified diagonal.
index | : the diagonal to be iterated. |
Definition at line 38 of file pascals_triangle.cpp.
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friend |
Insertion operator for streaming output from pascal's triangle of degree 3.
Insertion operator for streaming output from pascal's triangle.
ostream | : the stream to send the output to. |
triangle | : the pascal triangle object. |
Definition at line 297 of file pascals_triangle.hpp.
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private |
Definition at line 137 of file pascals_triangle.hpp.