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  1. #include <vector>
  2. #include <algorithm>
  3. #include <iterator>
  4. #include <iostream>
  5. #include <iomanip>
  6.  
  7. int main()
  8. {
  9.     std::vector< std::vector<int> > my_array = { { 3, 8, 7, 2 }, { 9, 12, 0, 4 }, { 12, 2, 14, 1 } } ;
  10.  
  11.     std::sort( std::begin(my_array), std::end(my_array),
  12.                []( const std::vector<int>& a, const std::vector<int>& b ) { return a[1] < b[1] ; } ) ;
  13.  
  14.     for( const auto& row : my_array )
  15.     {
  16.         for( int v : row ) std::cout << std::setw(3) << v ;
  17.         std::cout << '\n' ;
  18.     }
  19. }
  20.  
Success #stdin #stdout 0s 3032KB
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stdin
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Standard input is empty
stdout
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 12  2 14  1
  3  8  7  2
  9 12  0  4
https://ideone.com/ABy7VS
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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