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The heapsort algorithm can be divided into two phases: heap construction, and heap extraction. The heap is an implicit data structure which takes no space beyond the array of objects to be sorted; the array is interpreted as a complete binary tree where each array element is a node and each node's parent and child links are defined by simple arithmetic on the array indexes.
The patience sorting algorithm can be applied to process control. Within a series of measurements, the existence of a long increasing subsequence can be used as a trend marker. A 2002 article in SQL Server magazine includes a SQL implementation, in this context, of the patience sorting algorithm for the length of the longest increasing subsequence.
Stable sorting algorithms maintain the relative order of records with equal keys (i.e. values). That is, a sorting algorithm is stable if whenever there are two records R and S with the same key and with R appearing before S in the original list, R will appear before S in the sorted list.
When we learned that the social game maker's recent Pyramid Solitaire Saga on Facebook was built using HTML5--right when Diamond Dash maker Wooga has seemingly dropped out of that race--we had to ...
The first Facebook game in PopCap Games's successful lineup of "Blitz" releases based on an original idea and intellectual property, the studio expected Solitaire Blitz to go out like gangbusters.
Kathleen Henkel started playing Solitaire with a pack of cards when she was five years old, but it took a trip to Africa and an addiction to PopCap's online game, Solitaire Blitz, to bring her to ...
Some games permit the provisional formation of auxiliary sequences (descending or ascending), i.e. groups of cards in succession but not yet ripe to be played to the families or sequences on the foundation cards. A second object of many patiences is merely to 'pair' cards.
Firstly, you're missing the heapify function. In its place you have a recursive perculate function, that looks like it's doing a simple bubble sort as max_heap iterates over the array it is invoked with. Next you're feeding the result of the bubble sort into heap sort, however you have two mistakes in your sift_down function.