vector<string> summaryRanges(vector<int>& nums) {
vector<string> res;
int p1, p2;
p1 = p2 = 0;
while (p1 < nums.size())
{
int start = p1;
p2 = p1;
int cnt = 0;
while (p2 < nums.size() && nums[p2] == nums[p1] + cnt)
{
cnt++;
p2++;
}
char start_str[32], end_str[32];
sprintf(start_str, "%d", nums[start]);
p2--;
sprintf(end_str, "%d", nums[p2]);
string start_part(start_str), end_part(end_str);//注意这里将数字转换为字符串的方法
string tmp_res = "";
if (cnt != 1)//has start and end
tmp_res = start_part + "->" + end_part;
else//only has start
tmp_res = start_part;
res.push_back(tmp_res);
p1 = p2+1;//更新p1为上一个区间结束的下一个位置
}
return res;
}
Status FileLoader::do_loop() {
TRY_RESULT(check_info,
check_loop(parts_manager_.get_checked_prefix_size(), parts_manager_.get_unchecked_ready_prefix_size(),
parts_manager_.unchecked_ready()));
if (check_info.changed) {
on_progress_impl(narrow_cast<size_t>(parts_manager_.get_ready_size()));
}
for (auto &query : check_info.queries) {
G()->net_query_dispatcher().dispatch_with_callback(
std::move(query), actor_shared(this, UniqueId::next(UniqueId::Type::Default, CommonQueryKey)));
}
if (check_info.need_check) {
parts_manager_.set_need_check();
parts_manager_.set_checked_prefix_size(check_info.checked_prefix_size);
}
if (parts_manager_.ready()) {
TRY_STATUS(parts_manager_.finish());
TRY_STATUS(on_ok(parts_manager_.get_size()));
LOG(INFO) << "Bad download order rate: "
<< (debug_total_parts_ == 0 ? 0.0 : 100.0 * debug_bad_part_order_ / debug_total_parts_) << "% "
<< debug_bad_part_order_ << "/" << debug_total_parts_ << " " << format::as_array(debug_bad_parts_);
stop_flag_ = true;
return Status::OK();
}
TRY_STATUS(before_start_parts());
SCOPE_EXIT {
after_start_parts();
};
while (true) {
if (blocking_id_ != 0) {
break;
}
if (resource_state_.unused() < static_cast<int64>(parts_manager_.get_part_size())) {
VLOG(files) << "Got only " << resource_state_.unused() << " resource";
break;
}
TRY_RESULT(part, parts_manager_.start_part());
if (part.size == 0) {
break;
}
VLOG(files) << "Start part " << tag("id", part.id) << tag("size", part.size);
resource_state_.start_use(static_cast<int64>(part.size));
TRY_RESULT(query_flag, start_part(part, parts_manager_.get_part_count()));
NetQueryPtr query;
bool is_blocking;
std::tie(query, is_blocking) = std::move(query_flag);
uint64 id = UniqueId::next();
if (is_blocking) {
CHECK(blocking_id_ == 0);
blocking_id_ = id;
}
part_map_[id] = std::make_pair(part, query->cancel_slot_.get_signal_new());
// part_map_[id] = std::make_pair(part, query.get_weak());
auto callback = actor_shared(this, id);
if (delay_dispatcher_.empty()) {
G()->net_query_dispatcher().dispatch_with_callback(std::move(query), std::move(callback));
} else {
send_closure(delay_dispatcher_, &DelayDispatcher::send_with_callback_and_delay, std::move(query),
std::move(callback), next_delay_);
next_delay_ = std::max(next_delay_ * 0.8, 0.003);
}
}
return Status::OK();
}