Lecture7code.txt

/*
 *  File: lecture.cpp
 *  ------------------
 * Snippets from the live coding part of Fri 1/25 lecture
 */

#include "genlib.h"
#include <iostream>
#include <fstream>
#include "map.h"
#include "set.h"
#include "simpio.h"

void Swap(char &ch1, char &ch2)
{
	char tmp = ch1;
	ch1 = ch2;
	ch2 = tmp;
}
string Signature(string s)
{
	s = ConvertToLowerCase(s);
	for (int i = 0; i < s.length(); i++) {
		int minIndex = i;
		for (int j = i+1; j < s.length(); j++)
			if (s[j] < s[minIndex]) minIndex = j;
		Swap(s[i], s[minIndex]);
	}
	return s;
}


string MaxKey(Map<Set<string> > &m)
{
	Map<Set<string> >::Iterator itr = m.iterator();
	int maxSize = 0;
	string maxKey;
	while (itr.hasNext()) {
		string key = itr.next();
		if (m[key].size() > maxSize) {
			maxKey = key;
			maxSize = m[key].size();
		}
	}
	return maxKey;
}
void ReadFile(ifstream &in, Map<Set<string> > &m)
{
	while (true) {
		string word;
		in >> word;
		if (in.fail()) break;
		m[Signature(word)].add(word);
	}
	cout << "Num signatures = " << m.size()<< endl;
	string maxSig = MaxKey(m);
	Set<string>::Iterator it = m[maxSig].iterator();
	while (it.hasNext())
		cout << it.next() << endl;
}



int main()
{
	ifstream in("ospd2.txt");
	Map<Set<string> > m;
	ReadFile(in, m);
	return 0;
}