Multidimensional mapa Los s se utilizan cuando queremos asignar un valor a una combinación de claves. La clave puede ser de cualquier tipo de datos, incluidos aquellos definidos por el usuario. Los mapas multidimensionales son mapas anidados; es decir, asignan una clave a otro mapa, que a su vez almacena combinaciones de valores clave con los valores asignados correspondientes.
Sintaxis:
// Creating a two-dimensional map: map object; // Creating an N-dimensional map: map>objeto;>
Ejemplo 1:
¿Qué es una interfaz?
// C++14 code to implement two-dimensional map> > #include> using> namespace> std;> > int> main()> {> > >// Two-dimensional key> >map<>int>, map<>int>,>int>>> metro;> > >// For accessing outer map> >map<>int>, map<>int>,>int>>>::iterador itr;> > >// For accessing inner map> >map<>int>,>int>>::iterador 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->segundo.begin(); ptr != itr->segundo.end(); ptr++) {> >cout <<>'First key is '> << ' And second key is ' << ' And value is ' } } }> |
amontonar ordenar
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trimestre en el negocioProducción:
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>
Ejemplo 2:
np significa
// 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>> metro; mapint, int>>::iterador itr; mapa |
cadena java a carbón
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>Producción:
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>