src/work/bin_heap_demo.cc
author jacint
Tue, 27 Apr 2004 23:01:15 +0000
changeset 453 f6731902c702
parent 258 94bafec4f56f
child 618 e944d741f472
permissions -rw-r--r--
(none)
     1 #include <iostream>
     2 #include <bin_heap.h>
     3 #include <string>
     4 #include <map>
     5 
     6 using namespace hugo;
     7 using namespace std;
     8 
     9 class string_int_map;
    10 
    11 // Egy binaris kupac, ami stringekhez rendelt double ertekeket tarol,
    12 // azaz mindig az a string van a tetejen, amihez a legkisebb szam tartozik.
    13 // A kupac egy string_int_map tipusu property_map segitsegevel tarolja
    14 // a stringek aktualis helyet sajatmagan belul.
    15 // Egy olyan stringhez, ami meg nincsen a kupac -1 -et kell rendelnunk.
    16 typedef BinHeap<string, double, string_int_map> StrDoubleHeap;
    17 
    18 class string_int_map : public map<string,int> {
    19   typedef map<string,int> parent;
    20 public:
    21   int get(const string &s) {
    22     // Bocs, ez igy gaaaany, de nem volt kedvem utananezni, hogy
    23     // hogy is mukodik ez a map :)
    24     if( count(s) == 0 ) {
    25       parent::operator[](s) = StrDoubleHeap::PRE_HEAP;
    26     }
    27     return parent::operator[](s);
    28   }
    29   int operator[](const string &s) {
    30     return get(s);
    31   }
    32   void set(const string &s, int i) {
    33       parent::operator[](s) = i;
    34   }
    35 };
    36 
    37 
    38 int main()
    39 {
    40   string_int_map sim;
    41   
    42   
    43   cout << "testing string_int_map default value:\n";
    44   cout << "  sim.get(\"alma\"): " << sim.get("alma") << endl;
    45   cout << "  sim[\"alma\"]: " << sim["alma"] << endl;
    46 
    47   cout << "creating the heap\n";
    48   StrDoubleHeap heap(sim);
    49 
    50   cout << "heap.push(\"alma\", 15);\n";
    51   heap.push("alma", 15);
    52 
    53   cout << "heap.set(\"korte\", 3.4);\n";
    54   heap.set("korte", 3.4);
    55 
    56   cout << "heap[\"alma\"] = " 
    57        << heap["alma"]
    58        << endl;
    59 
    60   cout << "heap.top() = "
    61        << heap.top() << endl;
    62   cout << "heap.prio() = "
    63        << heap.prio() << endl;
    64 
    65   cout << "heap.decrease(\"alma\", 1.2);\n";
    66   heap.set("alma", 1.2);
    67 
    68   cout << "heap.top() = "
    69        << heap.top() << endl;
    70   cout << "heap.prio() = "
    71        << heap.prio() << endl;
    72 
    73   cout << "heap.set(\"alma\", 22);\n";
    74   heap.set("alma", 22);
    75 
    76   cout << "heap.top() = "
    77        << heap.top() << endl;
    78   cout << "heap.prio() = "
    79        << heap.prio() << endl;
    80 
    81   cout << "heap.size() = "
    82        << heap.size() << endl;
    83   cout << "heap.pop();\n";
    84   heap.pop();
    85 
    86   cout << "heap.top() = "
    87        << heap.top() << endl;
    88   cout << "heap.prio() = "
    89        << heap.prio() << endl;
    90 
    91   cout << "heap.state(\"szilva\") = "
    92        << heap.state("szilva") << endl;
    93   cout << "heap.set(\"szilva\", 0.5);\n";
    94   heap.set("szilva", 0.5);
    95   cout << "heap.state(\"szilva\") = "
    96        << heap.state("szilva") << endl;
    97   cout << "heap.top() = "
    98        << heap.top() << endl;
    99   cout << "heap.pop();\n";
   100   heap.pop();
   101   cout << "heap.state(\"szilva\") = "
   102        << heap.state("szilva") << endl;
   103 
   104   cout << "heap.size() = "
   105        << heap.size() << endl;
   106   cout << "heap.pop();\n";
   107   heap.pop();
   108 
   109   cout << "heap.size() = "
   110        << heap.size() << endl;  
   111   cout << "heap.empty() = "
   112        << (heap.empty()?"true":"false") << endl;  
   113 }