BirthdayOdds.cpp

#include <iostream>
#include <sstream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <cstring>
#include <climits>
using namespace std;
typedef pair<int,int> pi;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<string> vs;
typedef vector<vs> vvs;

class BirthdayOdds {
        public:
        int minPeople(int minOdds, int daysInYear)
        {
            int n = daysInYear;
            double pr = 100 - minOdds;
            double p = 100.00;
            int k = 1;
            while(p > pr){
                p *= (double)(n-k)/double(n);
                k++;
            }
            return k;
        }

// BEGIN CUT HERE
	public:
	void run_test(int Case) { if ((Case == -1) || (Case == 0)) test_case_0(); if ((Case == -1) || (Case == 1)) test_case_1(); if ((Case == -1) || (Case == 2)) test_case_2(); if ((Case == -1) || (Case == 3)) test_case_3(); }
	private:
	template <typename T> string print_array(const vector<T> &V) { ostringstream os; os << "{ "; for (typename vector<T>::const_iterator iter = V.begin(); iter != V.end(); ++iter) os << '\"' << *iter << "\","; os << " }"; return os.str(); }
	void verify_case(int Case, const int &Expected, const int &Received) { cerr << "Test Case #" << Case << "..."; if (Expected == Received) cerr << "PASSED" << endl; else { cerr << "FAILED" << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } }
	void test_case_0() { int Arg0 = 75; int Arg1 = 5; int Arg2 = 4; verify_case(0, Arg2, minPeople(Arg0, Arg1)); }
	void test_case_1() { int Arg0 = 50; int Arg1 = 365; int Arg2 = 23; verify_case(1, Arg2, minPeople(Arg0, Arg1)); }
	void test_case_2() { int Arg0 = 1; int Arg1 = 365; int Arg2 = 4; verify_case(2, Arg2, minPeople(Arg0, Arg1)); }
	void test_case_3() { int Arg0 = 84; int Arg1 = 9227; int Arg2 = 184; verify_case(3, Arg2, minPeople(Arg0, Arg1)); }

// END CUT HERE

};

// BEGIN CUT HERE
     int main()
     {
        BirthdayOdds ___test;
        ___test.run_test(-1);
     }
// END CUT HERE