cxx17/cc197.cc

// Return the score for a mastermind guess.

#define CATCH_CONFIG_MAIN
#include <catch.hpp>

#include <range/v3/all.hpp>
using namespace ranges;

template<typename T>
static T max_seq(std::initializer_list<T> seq) {
  T top = *seq.begin();

  for (auto start : view::ints(0ul, seq.size())) {
    for (auto stop : view::ints(start + 1, seq.size())) {
      auto sum = accumulate(seq | view::slice(start, stop), 0);
      top = std::max(sum, top);
    }
  }

  return top;
}

TEST_CASE("cc19.9", "max_seq") {
  CHECK(max_seq({2, -8, 3, -2, 4, -10}) == 5);
}