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  1. //https://w...content-available-to-author-only...t.com/r/dailyprogrammer/comments/5st2so/20170208_challenge_302_intermediate_ascii/
  2.  
  3. #include <iostream>
  4. #include <vector>
  5.  
  6. class histogram_t
  7. {
  8. public:
  9.     histogram_t()
  10.         : m_bar_width( 10 )
  11.     {}
  12.     histogram_t( const std::pair< int, int > xrange, const std::pair< int, int >yrange )
  13.             : m_bar_width( 10 ),
  14.               m_width_min( xrange.first ),
  15.               m_width_max( xrange.second ),
  16.               m_height_max( yrange.second ),
  17.               m_height_min( yrange.first )
  18.     {
  19.         create_and_init_bars();
  20.     }
  21.     void print( const char marker = '*')
  22.     {
  23.  
  24.         int fwidth = get_format_width();
  25.  
  26.         for( int height = 0; height <= m_height_max; height++ )
  27.         {
  28.             printf( "%*d|",fwidth , m_height_max - height );
  29.             if ( height != m_height_max )
  30.             {
  31.                 for ( int width = 0; width < m_bars.size(); width++ )
  32.                 {
  33.                     printf( "%*.c", fwidth + 1, ( m_bars[width] < m_height_max - height ? ' ' : marker ) );
  34.                 }
  35.                 std::cout << std::endl;
  36.             }
  37.             else
  38.             {
  39.  
  40.                 for ( int width = 0; width <= m_bars.size(); width++ )
  41.                 {
  42.                     printf("%*d ", fwidth, m_width_min + ( width * m_bar_width ) );
  43.                 }
  44.             }
  45.         }
  46.  
  47.  
  48.     }
  49.     void set_height( const std::pair< int, int > range )
  50.     {
  51.         m_height_max = range.second;
  52.         m_height_min = range.first;
  53.     }
  54.     void set_width( const std::pair< int, int > range )
  55.     {
  56.         m_width_max = range.second;
  57.         m_width_min = range.first;
  58.         create_and_init_bars();
  59.     }
  60.  
  61.     void add_data( std::vector<std::pair<int,int>> values )
  62.     {
  63.         std::vector<std::pair<int, int>>::iterator it;
  64.         for( it = values.begin(); it != values.end(); it++ )
  65.         {
  66.             add_data( *it );
  67.         }
  68.     }
  69.     void add_data( std::pair<int, int> data )
  70.     {
  71.         add_data( data.first, data.second );
  72.     }
  73.  
  74. protected:
  75.     int calculate_bar( const int number ) const { return ( number - m_width_min )  / m_bar_width; }
  76.     void create_and_init_bars( void )
  77.     {
  78.         m_bars.clear();
  79.         int barn = ( m_width_max - m_width_min ) / m_bar_width;
  80.         for( int i = 0; i < barn; i++ )
  81.         {
  82.             m_bars.push_back( 0 );
  83.         }
  84.     }
  85.     int get_format_width( void )
  86.     {
  87.         int max = m_width_max;
  88.         int rc = 0;
  89.         while( max > 0)
  90.         {
  91.             rc++;
  92.             max /= 10;
  93.         }
  94.         return rc;
  95.     }
  96.     void add_data( const int bar, const int frequency )
  97.     {
  98.         m_bars[ calculate_bar( bar ) ] += frequency;
  99.     }
  100.     const int m_bar_width;
  101.     int m_height_min,
  102.     m_height_max,
  103.     m_width_min,
  104.     m_width_max;
  105.     std::vector<int> m_bars;
  106.  
  107. };
  108.  
  109. int main ()
  110. {
  111.     histogram_t h( { 0, 50 }, { 1,10 } );
  112.     h.add_data({ { 0, 1 }, { 10, 3 }, { 20, 6 }, { 30, 4 }, { 40, 2 } } );
  113.     h.print( '|' );
  114.     return 0;
  115. }
Success #stdin #stdout 0s 15240KB
comments ()
stdin
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Standard input is empty
stdout
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10|               
 9|               
 8|               
 7|               
 6|        |      
 5|        |      
 4|        |  |   
 3|     |  |  |   
 2|     |  |  |  |
 1|  |  |  |  |  |
 0| 0 10 20 30 40 50
https://ideone.com/NuH3Yw
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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