topcoder/DerivativeSequence.cpp at master · cou929/topcoder · GitHub

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// BEGIN CUT HERE
// END CUT HERE
#include <sstream>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <utility>
#include <set>
#include <cctype>
#include <queue>
#include <stack>
using namespace std;
class DerivativeSequence {
public:
  vector <int> derSeq(vector <int> a, int n)
  {
    vector <int> ret;

    ret = a;

    for (int i=0; i<n; i++)
      {
	vector <int> next;

	for (int j=0; j<ret.size()-1; j++)
	  next.push_back(ret[j+1] - ret[j]);

	ret.clear();
	ret = next;
      }

    return ret;
  }

  // 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(); 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 vector <int> &Expected, const vector <int> &Received) { cerr << "Test Case #" << Case << "..."; if (Expected == Received) cerr << "PASSED" << endl; else { cerr << "FAILED" << endl; cerr << "\tExpected: " << print_array(Expected) << endl; cerr << "\tReceived: " << print_array(Received) << endl; } }
  void test_case_0() { int Arr0[] = {5,6,3,9,-1}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 1; int Arr2[] = {1, -3, 6, -10 }; vector <int> Arg2(Arr2, Arr2 + (sizeof(Arr2) / sizeof(Arr2[0]))); verify_case(0, Arg2, derSeq(Arg0, Arg1)); }
  void test_case_1() { int Arr0[] = {5,6,3,9,-1}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 2; int Arr2[] = {-4, 9, -16 }; vector <int> Arg2(Arr2, Arr2 + (sizeof(Arr2) / sizeof(Arr2[0]))); verify_case(1, Arg2, derSeq(Arg0, Arg1)); }
  void test_case_2() { int Arr0[] = {5,6,3,9,-1}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 4; int Arr2[] = {-38 }; vector <int> Arg2(Arr2, Arr2 + (sizeof(Arr2) / sizeof(Arr2[0]))); verify_case(2, Arg2, derSeq(Arg0, Arg1)); }
  void test_case_3() { int Arr0[] = {4,4,4,4,4,4,4,4}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 3; int Arr2[] = {0, 0, 0, 0, 0 }; vector <int> Arg2(Arr2, Arr2 + (sizeof(Arr2) / sizeof(Arr2[0]))); verify_case(3, Arg2, derSeq(Arg0, Arg1)); }
  void test_case_4() { int Arr0[] = {-100,100}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 0; int Arr2[] = {-100, 100 }; vector <int> Arg2(Arr2, Arr2 + (sizeof(Arr2) / sizeof(Arr2[0]))); verify_case(4, Arg2, derSeq(Arg0, Arg1)); }

  // END CUT HERE

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