/// <summary>
/// 单道题的解题
/// </summary>
/// <param name="grade"></param>
/// <returns></returns>
public static string Branch(string grade)
{
if (grade.Contains("/"))
{
return(CalculationLogic.ProperFraction(CalculationLogic.ScoreReversePolishType(grade)));
}
else
{
return(CalculationLogic.ReversePolishType(grade));
}
}
/// <summary>
/// 括号
/// </summary>
internal static string bracket(string topic)
{
Stack <object> stacknum = new Stack <object>();
Stack <string> stacksymbol = new Stack <string>();
stacksymbol.Push("#");
while (topic.Length != 0)
{
int length = CalculationLogic.Evaluation(topic);
if (length == 99)
{
stacknum.Push(Convert.ToDouble(topic.Substring(0, topic.Length)));
while (stacknum.Count != 1)
{
var one = stacknum.Pop();
var two = stacknum.Pop();
stacknum.Push(CalculationLogic.consequence(stacksymbol.Pop(), Convert.ToDouble(two), Convert.ToDouble(one)));
}
return(stacknum.Peek().ToString());
}
if (length != 0)
{
stacknum.Push(Convert.ToDouble(topic.Substring(0, length)));
topic = topic.Substring(length, topic.Length - length);
}
else if (CalculationLogic.GetOperationLevel(topic.Substring(0, 1)) >
CalculationLogic.GetOperationLevel(stacksymbol.Peek()))
{
stacksymbol.Push(topic.Substring(0, 1));
topic = topic.Substring(1, topic.Length - 1);
}
else
{
var one = stacknum.Pop();
var two = stacknum.Pop();
stacknum.Push(CalculationLogic.consequence(stacksymbol.Pop(), Convert.ToDouble(two), Convert.ToDouble(one)));
stacksymbol.Push(topic.Substring(0, 1));
topic = topic.Substring(1, topic.Length - 1);
}
}
return("");
}
/// <summary>
/// 题目的生成
/// </summary>
/// <param name="QuestionNumber"></param>
/// <param name="grade"></param>
/// <returns></returns>
public static Hashtable ProblemGeneration(string questionNumber, string grade)
{
switch (grade)
{
case "一年级":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.FirstGrade();
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "二年级":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.SecondGrade();
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "三年级":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.ThreeGrade();
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "四年级":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.FourGrade();
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "五年级":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.FiveGrade();
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "六年级":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.SixGrade();
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "整数":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.RandomDigit(0, 1);
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "小数":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.RandomDigit(1, 2);
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
case "分数":
for (int i = 0; i < int.Parse(questionNumber); i++)
{
try
{
string title = RandomTopic.RandomDigit(2, 3);
titleHash.Add(title, CalculationLogic.branch(title));
}
catch
{
i--;
}
}
break;
}
return(titleHash);
}