今天是11月的第一個周末翩隧，我安靜的在家休息，又選擇了一道leetcode設(shè)計題呻纹，感覺很有意思堆生，由于調(diào)用方法不超過400次，可以盡情發(fā)揮
2590. 設(shè)計一個待辦事項清單

class TodoList
    def initialize()
       @h = {}
       @cnt = 0
    end


=begin
    :type user_id: Integer
    :type task_description: String
    :type due_date: Integer
    :type tags: String[]
    :rtype: Integer
=end
    def add_task(user_id, task_description, due_date, tags)
        unless @h.has_key?(user_id)
            @cnt += 1
            @h[user_id] = {}
            @h[user_id][task_description] = {}
            @h[user_id][task_description]["due_date"] = due_date
            @h[user_id][task_description]["tags"] = tags
            @h[user_id][task_description]["id"] = @cnt
            @h[user_id][task_description]["completed"] = false
            return @cnt
        else
            @cnt += 1
            @h[user_id][task_description] = {}
            @h[user_id][task_description]["due_date"] = due_date
            @h[user_id][task_description]["tags"] = tags
            @h[user_id][task_description]["id"] = @cnt
            @h[user_id][task_description]["completed"] = false
            return @cnt
        end
        
    end


=begin
    :type user_id: Integer
    :rtype: String[]
=end
    def get_all_tasks(user_id)
        if @h.has_key?(user_id)
           return @h[user_id].select {|k,v| @h[user_id][k]["completed"] == false}.keys.sort_by {|it| @h[user_id][it]["due_date"]}
        else
           return []
        end
    end


=begin
    :type user_id: Integer
    :type tag: String
    :rtype: String[]
=end
    def get_tasks_for_tag(user_id, tag)
        if @h.has_key?(user_id)
            return @h[user_id].select {|k,v| @h[user_id][k]["completed"] == false && @h[user_id][k]["tags"].include?(tag)}.keys.sort_by {|it| @h[user_id][it]["due_date"]}
        else
            return []
        end
    end


=begin
    :type user_id: Integer
    :type task_id: Integer
    :rtype: Void
=end
    def complete_task(user_id, task_id)
       if @h.has_key?(user_id)
            m = @h[user_id].select {|k,v| @h[user_id][k]["id"] == task_id}.keys[0]
            if m != nil
                @h[user_id][m]["completed"] = true
            end
       end
    end


end

# Your TodoList object will be instantiated and called as such:
# obj = TodoList.new()
# param_1 = obj.add_task(user_id, task_description, due_date, tags)
# param_2 = obj.get_all_tasks(user_id)
# param_3 = obj.get_tasks_for_tag(user_id, tag)
# obj.complete_task(user_id, task_id)