/Users/jst/src/grafalgo/cpp/dataStructures/hash/perf/evalHashMap.cpp

#include "stdinc.h"
#include "HashMap.h"
#include "Util.h"

using namespace grafalgo;

void basicEval(int n) {
        int t1, t2;
        HashMap map(n);
        int *perm = new int[2*n+1];
        Util::genPerm(2*n,perm);

        cout << "putting in random order: ";
        t1 = Util::getTime();
        for (int i = 1; i <= n; i++) {
                map.put(perm[i],i);
        }
        t2 = Util::getTime();
        cout << t2-t1 << " " << ((double) (t2-t1))/n << endl;

        cout << "getting in reverse random order (hits): ";
        t1 = Util::getTime();
        for (int i = 1; i <= n; i++) {
                map.get(perm[(n+1)-i]);
        }
        t2 = Util::getTime();
        cout << t2-t1 << " " << ((double) (t2-t1))/n << endl;

        cout << "getting in random order (misses): ";
        t1 = Util::getTime();
        for (int i = n+1; i <= 2*n; i++) {
                map.get(perm[i]);
        }
        t2 = Util::getTime();
        cout << t2-t1 << " " << ((double) (t2-t1))/n << endl;

        cout << "remapping existing pairs: ";
        t1 = Util::getTime();
        for (int i = 1; i <= n; i++) {
                if (!map.put(perm[i],-i)) {
                        cout << "put failed\n";
                        return;
                }
        }
        t2 = Util::getTime();
        cout << t2-t1 << " " << ((double) (t2-t1))/n << endl;

        cout << "remove/put pairs: ";
        t1 = Util::getTime();
        for (int i = 1; i <= n; i++) {
                map.remove(perm[i]);
                if (!map.put(perm[i+n],i+n)) {
                        cout << "put failed\n";
                        return;
                }
        }
        t2 = Util::getTime();
        cout << t2-t1 << " " << ((double) (t2-t1))/n << endl;
}


int main() {
        int n = 1000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 2000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 4000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 10000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 20000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 40000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 100000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 200000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 400000;
        cout << "n=" << n << endl;
        basicEval(n);

        n = 1000000;
        cout << "n=" << n << endl;
        basicEval(n);
}