src/work/bin_heap_demo.cc
author alpar
Tue, 17 Feb 2004 13:26:44 +0000
changeset 92 a7f9e2fda93a
parent 37 e0e41f9e2be5
child 105 a3c73e9b9b2e
permissions -rw-r--r--
.
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#include <iostream>
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#include <bin_heap.hh>
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#include <string>
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#include <map>
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using namespace marci;
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using namespace std;
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class string_int_map;
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// Egy binaris kupac, ami stringekhez rendelt double ertekeket tarol,
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// azaz mindig az a string van a tetejen, amihez a legkisebb szam tartozik.
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// A kupac egy string_int_map tipusu property_map segitsegevel tarolja
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// a stringek aktualis helyet sajatmagan belul.
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// Egy olyan stringhez, ami meg nincsen a kupac -1 -et kell rendelnunk.
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typedef BinHeap<string, double, string_int_map> StrDoubleHeap;
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class string_int_map : public map<string,int> {
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public:
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  int get(const string &s) {
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    // Bocs, ez igy gaaaany, de nem volt kedvem utananezni, hogy
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    // hogy is mukodik ez a map :)
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    if( count(s) == 0 ) {
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      operator[](s) = StrDoubleHeap::PRE_HEAP;
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    }
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    return operator[](s);
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  }
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  void put(const string &s, int i) {
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      operator[](s) = i;
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  }
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};
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int main()
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{
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  string_int_map sim;
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  cout << "testing string_int_map default value:\n";
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  cout << "  alma: " << sim.get("alma") << endl;
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  cout << "creating the heap\n";
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  StrDoubleHeap heap(sim);
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  cout << "heap.push(\"alma\", 15);\n";
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  heap.push("alma", 15);
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  cout << "heap.put(\"korte\", 3.4);\n";
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  heap.put("korte", 3.4);
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  cout << "heap.get(\"alma\") = " 
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       << heap.get("alma")
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       << endl;
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  cout << "heap.top() = "
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       << heap.top() << endl;
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  cout << "heap.topValue() = "
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       << heap.topValue() << endl;
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  cout << "heap.decrease(\"alma\", 1.2);\n";
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  heap.put("alma", 1.2);
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  cout << "heap.top() = "
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       << heap.top() << endl;
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  cout << "heap.topValue() = "
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       << heap.topValue() << endl;
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  cout << "heap.put(\"alma\", 22);\n";
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  heap.put("alma", 22);
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  cout << "heap.top() = "
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       << heap.top() << endl;
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  cout << "heap.topValue() = "
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       << heap.topValue() << endl;
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  cout << "heap.size() = "
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       << heap.size() << endl;
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  cout << "heap.pop();\n";
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  heap.pop();
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  cout << "heap.top() = "
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       << heap.top() << endl;
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  cout << "heap.topValue() = "
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       << heap.topValue() << endl;
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  cout << "heap.state(\"szilva\") = "
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       << heap.state("szilva") << endl;
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  cout << "heap.put(\"szilva\", 0.5);\n";
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  heap.put("szilva", 0.5);
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  cout << "heap.state(\"szilva\") = "
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       << heap.state("szilva") << endl;
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  cout << "heap.top() = "
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       << heap.top() << endl;
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  cout << "heap.pop();\n";
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  heap.pop();
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  cout << "heap.state(\"szilva\") = "
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       << heap.state("szilva") << endl;
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  cout << "heap.size() = "
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       << heap.size() << endl;
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  cout << "heap.pop();\n";
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  heap.pop();
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  cout << "heap.size() = "
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       << heap.size() << endl;  
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  cout << "heap.empty() = "
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       << (heap.empty()?"true":"false") << endl;  
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}