BettingStrategy.cpp

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#include <sstream>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <utility>
#include <set>
#include <cctype>

using namespace std;

class BettingStrategy {
public:
  int finalSum(int initSum, string outcome)
  {
    int ret = initSum;
    int bet = 1;

    for (int i=0; i<outcome.size(); i++)
      {
	if (outcome[i] == 'W')
	  {
	    ret += bet;
	    bet = 1;
	  }
	else
	  {
	    ret -= bet;
	    bet *= 2;
	    if (ret - bet < 0)
	      break;
	  }
      }
    return ret;
  }

   
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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(); if ((Case == -1) || (Case == 4)) test_case_4();}
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 = 12; string Arg1 = "WWWWWWWW"; int Arg2 = 20; verify_case(0, Arg2, finalSum(Arg0, Arg1)); }
  void test_case_1() { int Arg0 = 15; string Arg1 = "LLLWLLLL"; int Arg2 = 1; verify_case(1, Arg2, finalSum(Arg0, Arg1)); }
  void test_case_2() { int Arg0 = 20; string Arg1 = "WLWLWLWL"; int Arg2 = 23; verify_case(2, Arg2, finalSum(Arg0, Arg1)); }
  void test_case_3() { int Arg0 = 925; string Arg1 = "WLLLLLWLLLLLLWWWWWLWLLWLLLLLLWL"; int Arg2 = 934; verify_case(3, Arg2, finalSum(Arg0, Arg1)); }
  void test_case_4() { int Arg0 = 42; string Arg1 = "LLWLLWWWWLLLLLWLLWLLLWWLW"; int Arg2 = 16; verify_case(4, Arg2, finalSum(Arg0, Arg1)); }

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};

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int main() {
BettingStrategy ___test;
___test.run_test(-1);
}
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