/// <summary>
/// 疊加遞增
/// </summary>
/// <remarks>eg: 1,2,3,5,8,13,21</remarks>
private FindTheLawFormula Superposition()
{
// 第一個開始的數值
var one = CommonUtil.GetRandomNumber(1, 3);
// 第一個開始的數值
var two = CommonUtil.GetRandomNumber(1, 3);
// 構成
List <int> numberList = new List <int>()
{
one, two
};
for (var index = 2; index < 8; index++)
{
numberList.Add(numberList[index - 2] + numberList[index - 1]);
}
FindTheLawFormula formula = new FindTheLawFormula()
{
// 自然數列表
NumberList = numberList,
// 填空項目編號
RandomIndexList = new List <int>()
{
5, 6, 7
}
};
// 結果返回
return(formula);
}
/// <summary>
/// 定量遞增算法
/// </summary>
/// <remarks>eg: 2,5,8,11,14,17,20</remarks>
private FindTheLawFormula Crescent()
{
// 第一個開始的數值
var start = CommonUtil.GetRandomNumber(1, 5);
// 遞增量
var addValue = CommonUtil.GetRandomNumber(5, 9);
// 構成
List <int> numberList = new List <int>()
{
start
};
List <int> randomIndexList = new List <int>()
{
0
};
for (var index = 1; index < 7; index++)
{
start += addValue;
numberList.Add(start);
randomIndexList.Add(index);
}
FindTheLawFormula formula = new FindTheLawFormula()
{
// 自然數列表
NumberList = numberList,
// 隨機項目編號(填空項目)
RandomIndexList = RandomIndexListOrder(randomIndexList)
};
// 結果返回
return(formula);
}
/// <summary>
/// 一組計算式答題的HTML內容作成
/// </summary>
/// <param name="items">3個計算式</param>
/// <param name="parentControlIndex">答題書索引號</param>
/// <returns>HTML內容</returns>
private string GetHtml(FindTheLawFormula items, int parentControlIndex)
{
int controlIndex = 0;
StringBuilder html = new StringBuilder();
items.NumberList.ForEach(d =>
{
if (items.RandomIndexList.Any(_ => _ == controlIndex))
{
html.AppendLine(string.Format("<input id=\"inputFtl{0}L{1}\" type=\"text\" placeholder=\" ?? \" class=\"form-control input-addBorder-2\" disabled=\"disabled\" onkeyup=\"if(!/^\\d+$/.test(this.value)) this.value='';\" />", parentControlIndex, controlIndex));
}
else
{
html.AppendLine(string.Format("<span class=\"badge badge-info\" style=\"width: 50px;\">{0}</span>", d));
}
controlIndex++;
});
return(html.ToString());
}
/// <summary>
/// 定量遞增擴展（2個定值逐個遞增）
/// </summary>
/// <remarks>eg: 2,3,7,8,12,13,17,18</remarks>
private FindTheLawFormula CrescentExt()
{
// 第一個開始的數值
var start = CommonUtil.GetRandomNumber(1, 5);
// 遞增量
var addValues = new List <int>()
{
CommonUtil.GetRandomNumber(1, 3), CommonUtil.GetRandomNumber(4, 6)
};
// 構成
List <int> numberList = new List <int>()
{
start
};
for (var index = 1; index < 8; index++)
{
start += addValues[(index + 1) % 2];
numberList.Add(start);
}
FindTheLawFormula formula = new FindTheLawFormula()
{
// 自然數列表
NumberList = numberList,
// 填空項目編號
RandomIndexList = new List <int>()
{
5, 6, 7
}
};
// 結果返回
return(formula);
}
/// <summary>
/// 數字排隊（從4個隨機數的排列中找規律）
/// </summary>
/// <remarks>eg: 1234,2341,3412,4123,1234</remarks>
private FindTheLawFormula QueueUpBase()
{
List <int> numbers = new List <int>();
StringBuilder number = new StringBuilder();
List <int> list = new List <int>()
{
1, 2, 3, 4, 5, 6, 7, 8, 9
};
int count = 0;
// 數字隊列初始化
while (true)
{
if (count == 4)
{
// 初始化創建5位以便前4位數字的輪轉
numbers.Add(numbers[0]);
break;
}
numbers.Add(CommonUtil.GetRandomNumber(list));
list.Remove(numbers.Last());
count++;
}
// 構成
List <int> numberList = new List <int>
{
Convert.ToInt32(string.Format("{0}{1}{2}{3}", numbers[0], numbers[1], numbers[2], numbers[3]))
};
count = 0;
// 數字隊列集合作成
while (true)
{
if (count == 4)
{
break;
}
number.Length = 0;
// 數字隊列輪轉(後一位數逐個逐個往前移動一位)
for (int index = 1; index <= numbers.Count; index++)
{
if (index == numbers.Count)
{
// 末尾放起始位上的數字
numbers[numbers.Count - 1] = numbers[0];
}
else
{
// 後一位數往前移動
numbers[index - 1] = numbers[index];
number.Append(numbers[index - 1]);
}
}
numberList.Add(Convert.ToInt32(number.ToString()));
count++;
}
FindTheLawFormula formula = new FindTheLawFormula()
{
// 自然數列表
NumberList = numberList,
// 填空項目編號
RandomIndexList = new List <int>()
{
2, 3
}
};
// 結果返回
return(formula);
}