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      std::max

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      < cpp‎ | algorithm

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      C++
       
      Biblioteca algoritmo
      Funções
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      Functions
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      Não modificar operações de seqüência
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      Non-modifying sequence operations
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      Modificando operações de seqüência
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      Modifying sequence operations
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      Particionamento operações
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      Partitioning operations
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      Operações de classificação (em intervalos ordenados)
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      Sorting operations (on sorted ranges)
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      Binários operações de busca (em intervalos ordenados)
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      Binary search operations (on sorted ranges)
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      Definir operações (em intervalos ordenados)
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      Set operations (on sorted ranges)
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      Operações de pilha
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      Heap operations
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      Mínimo / máximo de operações
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      Minimum/maximum operations
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      Operações numéricas
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      Numeric operations
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      C biblioteca
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      C library
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      Defined in header <algorithm>
      template<class T >
      const T& max(const T& a, const T& b );
      		 (1)
      template<class T, class Compare >
      const T& max(const T& a, const T& b, Compare comp );
      		 (2)
      template<class T >
      T max(std::initializer_list<T> ilist);
      		 (3) (a partir do C++ 11)
      template<class T, class Compare >
      T max(std::initializer_list<T> ilist, Compare comp );
      		 (4) (a partir do C++ 11)
      1-2)
      Retorna o maior dos dois valores.
      Original:
      Returns the greater of the two values.
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      3-4)
      Retorna o maior dos valores na lista de inicializador ilist.
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      Returns the greatest of the values in initializer list ilist.
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      As versões (1,3) usar operator< para comparar os valores, as versões (2,4) usar a função de comparação dada comp.
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      The (1,3) versions use operator< to compare the values, the (2,4) versions use the given comparison function comp.
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      Índice

      [editar]Parâmetros

      a, b -
      os valores para comparar
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      the values to compare
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      ilist -
      inicializador lista com os valores para comparar
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      initializer list with the values to compare
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      comp - comparison function which returns ​true if if a is less than b.

      The signature of the comparison function should be equivalent to the following:

       bool cmp(const Type1 &a, const Type2 &b);

      The signature does not need to have const&, but the function must not modify the objects passed to it.
      The types Type1 and Type2 must be such that an object of type T can be implicitly converted to both of them. ​

      Type requirements
      -
      T must meet the requirements of LessThanComparable. for the overloads (1) and (3)
      -
      T must meet the requirements of CopyConstructible. for the overloads (3) and (4)

      [editar]Valor de retorno

      1-2)
      O maior dos a e b. Se eles são equivalentes, retorna a.
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      The greater of a and b. If they are equivalent, returns a.
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      3-4)
      O maior valor em ilist. Se vários valores são equivalentes ao maior, retorna a um mais à esquerda.
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      The greatest value in ilist. If several values are equivalent to the greatest, returns the leftmost one.
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      [editar]Complexidade

      1-2)
      Constante
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      Constant
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      3-4)
      Linear em ilist.size()
      Original:
      Linear in ilist.size()
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      [editar]Possível implementação

      First version 
      template<class T>const T& max(const T& a, const T& b){return(a < b)? b : a;}
      Second version 
      template<class T, class Compare>const T& max(const T& a, const T& b, Compare comp){return(comp(a, b))? b : a;}
      Third version 
      template<class T > T max(std::initializer_list<T> ilist){return*std::max_element(ilist.begin(), ilist.end());}
      Fourth version 
      template<class T, class Compare > T max(std::initializer_list<T> ilist, Compare comp ){return*std::max_element(ilist.begin(), ilist.end(), comp);}

      [editar]Exemplo

      #include <algorithm>#include <iostream>#include <string> int main(){std::cout<<"larger of 1 and 9999: "<< std::max(1, 9999)<<'\n'<<"larger of 'a', and 'b': "<< std::max('a', 'b')<<'\n'<<"longest of \"foo\", \"bar\", and \"hello\": "<< std::max({"foo", "bar", "hello"}, [](conststd::string& s1, conststd::string& s2){return s1.size()< s2.size();})<<'\n';}

      Output: 

      larger of 1 and 9999: 9999 larger of 'a', and 'b': b longest of "foo", "bar", and "hello": hello

      [editar]Veja também

      retorna o menor dos dois elementos
      Original:
      returns the smaller of two elements
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      (modelo de função)[edit]
      (C++11)
      retorna o. maior e o menor dos dois elementos
      Original:
      returns the larger and the smaller of two elements
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      (modelo de função)[edit]
      retorna o maior elemento de um intervalo
      Original:
      returns the largest element in a range
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      (modelo de função)[edit]
      Obtida de "http://pt.cppreference.com/mwiki/index.php?title=cpp/algorithm/max&oldid=19935"
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