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#include <iostream>
#include <vector>
#include <map>
#include <algorithm>
#include <utility>
#include <fstream>
void printStrings( const std::vector<std::string> & strings ) {
std::map<std::string, int> frequencies ;
int maxlen = 0 ;
for ( std::string str : strings ) {
frequencies[ str ]++ ;
if ( str.length( ) > maxlen )
maxlen = str.length( ) ;
}
std::vector<std::pair<std::string , int>> orderedFreq { frequencies.begin( ),
frequencies.end( ) } ;
std::sort ( orderedFreq.begin( ) , orderedFreq.end( ) , []( const
std::pair<std::string, int> a , const std::pair<std::string, int> b )
{ return a.second > b.second ; } ) ;
std::string answer ;
std::cout << "Output as csv : (y)es or (n)o ?\n" ;
std::cin >> answer ;
if ( answer.substr(0, 1 ) == "n" ) {
for ( auto & p : orderedFreq ) {
std::cout << p.first ;
std::cout.width( maxlen - p.first.length( ) + 1 ) ;
std::cout << p.second << std::endl ;
}
}
else {
for ( auto & p : orderedFreq ) {
std::cout << p.first << ',' << p.second << '\n' ;
}
}
}
int main( int argc , char * argv[] ) {
std::vector<std::string> argstrings ;
std::vector<std::string> argfiles ;
for ( int i = 1 ; i < argc ; i++ ) {
std::string argument( argv[ i ] ) ;
std::ifstream infile ( argument , std::ios::in ) ;
if ( infile ) {
argfiles.push_back( argument ) ;
infile.close( ) ;
}
else {
argstrings.push_back( argument ) ;
}
}
if ( ! argstrings.empty( ) ) {
std::cout << "Strings in the argument list:\n" ;
printStrings( argstrings ) ;
}
if ( ! argfiles.empty( ) ) {
for ( auto & file : argfiles ) {
std::ifstream inputfile( file , std::ios::in ) ;
std::vector<std::string> filelines ;
std::string line ;
std::cout << "Content of file " << file << " by frequency:\n" ;
while ( inputfile ) {
std::getline( inputfile , line ) ;
filelines.push_back( line ) ;
}
inputfile.close( ) ;
printStrings( filelines ) ;
}
}
return 0 ;
}
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