inversion-calculator

main.cpp

#include <algorithm>
#include <string>
#include <iostream>
#include <iterator>
#include <cstdint>

int main() {
	std::string line;
	while(std::getline(std::cin, line)) {
		std::size_t inversions = 0;
		auto begin = line.begin();
		auto end = line.end();
		for (auto it = begin; it != end; ++it) {
			inversions += std::count_if(begin, it, [&](auto val){return val > *it;});
		}
		std::cout << "inversions in '" << line << "': " << inversions << '\n';
	}
}

makefile

# Makefile for a.out
# created with makefile-creator


####################
#Settings:


CXX ?= g++
FLAGS +=  -Wall -Wextra -Wpedantic -std=c++1y -O3 -mtune=native -Werror -DNDEBUG 
LIBS += 
INCLUDES += 
TARGET = a.out
OBJECTS = main.o


####################
#Rules:


$(TARGET) : $(OBJECTS)
	$(CXX) $(FLAGS) -o $(TARGET) $(OBJECTS) $(LIBS)

%.o:
	$(CXX) $(FLAGS) $(INCLUDES) -c -o $@ $<

clean:
	rm *.o

all: $(TARGET)


####################
#Dependencies:


main.o: main.cpp makefile

mfc.conf

use=cpp
use=release