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Daugiamačio žemėlapio įgyvendinimas C++

Daugiamatis žemėlapis s naudojami, kai norime susieti reikšmę su klavišų deriniu. Raktas gali būti bet kokio tipo duomenų, įskaitant tuos, kuriuos nustato vartotojas. Daugiamačiai žemėlapiai yra įdėtieji žemėlapiai; tai yra, jie susieja raktą su kitu žemėlapiu, kuris pats saugo raktų reikšmių derinius su atitinkamomis susietomis reikšmėmis.

Sintaksė:



dirbtinis intelektas ir intelektualūs agentai
 // Creating a two-dimensional map: map object; // Creating an N-dimensional map: map>objektas;>> 

1 pavyzdys:








// C++14 code to implement two-dimensional map> > #include> using> namespace> std;> > int> main()> {> > >// Two-dimensional key> >map<>int>, map<>int>,>int>>> m;>> >// For accessing outer map> >map<>int>, map<>int>,>int>>>::iteratorius itr;>> >// For accessing inner map> >map<>int>,>int>>::iteratorius ptr;>> >for> (>int> i = 0; i <2; i++) {> >for> (>int> j = 0; j <2; j++) {> >m[i][j] = i + j;> >}> >}> > >for> (>int> i = 0; i <2; i++) {> >for> (>int> j = 0; j <2; j++) {> > >// Accessing through array subscript> >cout <<>'First key is '> << i> ><<>' And second key is '> << j> ><<>' And value is '> << m[i][j] << endl;> >}> >}> > >cout <<>' Now accessing map though iterator '>;> > >for> (itr = m.begin(); itr != m.end(); itr++) {> > >for> (ptr = itr->antra.begin(); ptr != itr->antra.pabaiga(); ptr++) {> >cout <<>'First key is '> << ' And second key is ' << ' And value is ' } } }>

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Išvestis:

4 mėn
 First key is 0 And second key is 0 And value is 0 First key is 0 And second key is 1 And value is 1 First key is 1 And second key is 0 And value is 1 First key is 1 And second key is 1 And value is 2 Now accessing map though iterator First key is 0 And second key is 0 And value is 0 First key is 0 And second key is 1 And value is 1 First key is 1 And second key is 0 And value is 1 First key is 1 And second key is 1 And value is 2>

2 pavyzdys:




// C++14 code to implement two-dimensional map> // and inserting value through insert()> > #include> using> namespace> std;> > int> main()> {> > >// First key type is a string> >mapint, int>> m; mapint, int>>::iterator itr; žemėlapis ::iteratorius ptr; m.insert(make_pair('Noob', žemėlapis ())); m['Noob'].insert(make_pair(0, 5)); m.insert(make_pair('Geek', žemėlapis ())); m['Geek'].insert(make_pair(1, 10)); m.insert(make_pair('Geek', žemėlapis ())); m['Geek'].insert(make_pair(2, 20)); for (itr = m.begin(); itr != m.end(); itr++) { for (ptr = itr->second.begin(); ptr != itr->second.end(); ptr++) { cout<< 'First key is ' << ' And second key is ' << ' And value is ' } } }>

kitaip jei bash
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Išvestis:

 First key is Geek And second key is 1 And value is 10 First key is Geek And second key is 2 And value is 20 First key is Noob And second key is 0 And value is 5>