private void CreateMCQuestion(SectionBaseInfo sectionInfo, Section section)
{
Random rand = new Random((int)DateTime.Now.Ticks);
int divValue = 2;//rand.Next(2, 9);
string questionText = string.Format("请选出是奇数的数。");
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
int minValue = 10;
int maxValue = 100;
if (sectionInfo is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = sectionInfo as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, minValue, maxValue, false, (c => ((c % divValue) != 0))))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
if (value == 0)
{
strBuilder.AppendLine(string.Format("0 不是奇数，也不是偶数。"));
}
else if (value % divValue == 0)
{
strBuilder.AppendLine(string.Format("{0}除以{1}等于{2}，没有余数。", value, divValue, value / divValue));
}
else
{
strBuilder.AppendLine(string.Format("{0}除以{1}等于{2}，余数是{3}，是正确答案。", value, divValue, (int)(value) / divValue, value % divValue));
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
}
private void CreateMCQuestion(SectionBaseInfo sectionInfo, Section section)
{
Random rand = new Random((int)DateTime.Now.Ticks);
//int divValue = rand.Next(2, 9);
string questionText = string.Format("请选出只能分解出两个质因数相乘的数。");
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
int minValue = 10;
int maxValue = 100;
if (sectionInfo is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = sectionInfo as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, minValue, maxValue, false,
(c) =>
{
int j, k, iFlag1 = 0, iFlag2 = 0, j2, k2;
for (j = 2; j < c / 2 + 1; j++)
{
if (c % j == 0)
{
iFlag1 = 0;
iFlag2 = 0;
for (k = 2; k < j / 2 + 1; k++)
{
if (j % k == 0)
{
iFlag1 = 1;
break;
}
}
j2 = (int)(c / j);
for (k2 = 2; k2 < j2 / 2 + 1; k2++)
{
if (j2 % k2 == 0)
{
iFlag2 = 1;
break;
}
}
if (iFlag1 == 0 && iFlag2 == 0)
{
return(true);
}
}
}
return(false);
}))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
int j, k, iFlag1 = 0, iFlag2 = 0, j2 = 0, k2;
int flag = -1;
flag = 0;
for (j = 2; j < value / 2 + 1; j++)
{
if (value % j == 0)
{
iFlag1 = 0;
iFlag2 = 0;
for (k = 2; k < j / 2 + 1; k++)
{
if (j % k == 0)
{
iFlag1 = 1;
break;
}
}
j2 = (int)(value / j);
for (k2 = 2; k2 < j2 / 2 + 1; k2++)
{
if (j2 % k2 == 0)
{
iFlag2 = 1;
break;
}
}
if (iFlag1 == 0 && iFlag2 == 0)
{
flag = 1;
break;
}
}
}
if (flag == 1)
{
strBuilder.AppendLine(string.Format("{0}可分解成质因数{1}，{2}相乘，是正确答案。", value, j, j2));
}
else
{
strBuilder.AppendLine(string.Format("{0}不能分解质因数。", value));
}
}
}
private void CreateMCQuestion(SectionBaseInfo sectionInfo, Section section)
{
Random rand = new Random((int)DateTime.Now.Ticks);
int tryCount = 100;
while (true)
{
int minValue = 10;
int maxValue = 100;
int j = 2;
if (sectionInfo is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = sectionInfo as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
int divValue = rand.Next(minValue, maxValue);
bool validValue = false;
for (j = 3; j <= divValue / 2 + 1; j++)
{
if (divValue % j == 0)
{
validValue = true;
break;
}
}
tryCount--;
if (tryCount == 0)
{
break;
}
if (!validValue)
{
continue;
}
string questionText = string.Format("请选出自然数{0}的约数。", divValue);
int inMinValue = 2, inMaxValue = 10;
if (j / 2 > 2)
{
inMinValue = j / 2;
}
if (j * 3 > 10)
{
inMaxValue = j * 3;
}
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, inMinValue, inMaxValue, false, (c => ((divValue % c) == 0))))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
if (divValue % value == 0)
{
strBuilder.AppendLine(string.Format("{0}除以{1}等于{2}，没有余数，是正确答案。", divValue, value, divValue / value));
}
else
{
strBuilder.AppendLine(string.Format("{0}除以{1}等于{2}，余数是{3}。", divValue, value, divValue / (int)(value), divValue % value));
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
break;
}
}
private void CreateMCQuestion(SectionBaseInfo info, Section section)
{
Random rand = new Random((int)DateTime.Now.Ticks);
int divValue = rand.Next(2, 9);
string questionText = string.Format("请选出是合数的数。");
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, minValue, maxValue, false,
(c) =>
{
for (int j = 2; j < c / 2 + 1; j++)
{
if (c % j == 0)
{
return(true);
}
}
return(false);
}))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
int flag = 1;
int j = 1;
if (value == 0)
{
flag = 0;
}
for (j = 2; j < value / 2 + 1; j++)
{
if (value % j == 0)
{
flag = 2;
break;
}
}
if (flag == 0)
{
strBuilder.AppendLine(string.Format("0 不是合数。"));
}
else if (flag == 1)
{
strBuilder.AppendLine(string.Format("{0}只有两个约数{1}，{2}。", value, 1, value));
}
else
{
strBuilder.AppendLine(string.Format("{0}有约数{1}，{2}，{3}...，大于2个，是正确答案。", value, 1, value, j));
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
}
private void CreateMCQuestion(SectionBaseInfo sectionInfo, Section section)
{
Random rand = new Random((int)DateTime.Now.Ticks);
int minValue = 10;
int maxValue = 100;
if (sectionInfo is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = sectionInfo as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
int divValue = rand.Next(minValue, maxValue);
string questionText = string.Format("请选出至少有两个质因数的数。");
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, minValue, maxValue, false,
(c) =>
{
int j, k, iFlag = 0;
for (j = 2; j < c / 2 + 1; j++)
{
if (c % j == 0)
{
iFlag = 0;
for (k = 2; k < j / 2 + 1; k++)
{
if (j % k == 0)
{
iFlag = 1;
break;
}
}
if (iFlag == 0)
{
return(true);
}
}
}
return(false);
}))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
int j, k, iFlag = 0, flag = -1;
if (value == 0 || value == 1)
{
flag = 0;
}
for (j = 2; j < value / 2 + 1; j++)
{
if (value % j == 0)
{
if (j == 2)
{
flag = 1;
break;
}
iFlag = 0;
for (k = 2; k < j / 2 + 1; k++)
{
if (j % k == 0)
{
iFlag = 1;
break;
}
}
if (iFlag == 0)
{
flag = 1;
break;
}
}
}
if (flag == 0)
{
strBuilder.AppendLine(string.Format("0和1都不是质因数。"));
}
else if (flag == 1)
{
strBuilder.AppendLine(string.Format("{0}有两个质因数，是正确答案。", value));
}
else
{
strBuilder.AppendLine(string.Format("{0}没有质因数。", value));
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
}
private MCQuestion CreateMCQuestion(SectionBaseInfo info, Section section)
{
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
if (section.QuestionCollection.Count == 0)
{
this.questionValueList.Clear();
}
Random rand = new Random((int)DateTime.Now.Ticks);
int valueA = 0, valueB = 0, valueC = 0;
int j = 0;
int flag = 0;
valueC = rand.Next(minValue / 3, maxValue / 3);
while (true)
{
flag = 0;
//for (int i2 = 0; i2 < maxValue + minValue; i2++)
while (true)
{
valueA = rand.Next(valueC, maxValue);
valueB = rand.Next(valueC, maxValue);
if (valueA % valueC == 0 && valueC >= valueA / valueC &&
valueB % valueC == 0 && valueC >= valueB / valueC &&
valueA != valueB && valueC != valueA && valueC != valueB &&
((valueA > valueB && valueA % valueB != 0) || (valueB > valueA && valueB % valueA != 0)))
{
flag = 1;
break;
}
//int lop = 0;
//if (valueA > valueB)
// lop = valueB;
//else
// lop = valueA;
//for (j = lop; j > 1; j--)
//{
// if (valueA % j == 0 && valueB % j == 0)
// {
// flag = 1;
// break;
// }
//}
}
//if (Enumerable.Where<int>(questionValueList, (c => (c == valueA))).Count<int>() > 0)
//{
// Thread.Sleep(10);
// continue;
//}
break;
}
questionValueList.Add(valueA);
string questionText = string.Format("请找出{0}和{1}的最大公约数。", valueA, valueB);
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
int valueLst = valueC - 20, valueMst = valueC + 20;
if (j - 20 <= 1)
{
valueLst = 1;
}
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, valueLst, valueMst, false, (c => (c == valueC)), valueC))
{
optionList.Add(option);
}
return(optionList);
}
);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
if (value == valueC)
{
strBuilder.AppendLine(string.Format(
"{0}除以{1}等于{2}，没有余数，并且{3}除以{4}等于{5}，没有余数，{1}是最大公约数，是正确答案。",
valueA, value, valueA / value, valueB, value, valueB / value));
}
else
{
strBuilder.AppendLine(string.Format("{0}不是{1}和{2}的最大公约数。", value, valueA, valueB));
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
section.QuestionCollection.Add(mcQuestion);
return(mcQuestion);
}
private void CreateMCQuestion(SectionBaseInfo info, Section section)
{
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
Random rand = new Random((int)DateTime.Now.Ticks);
int valueA = 0, valueB = 0, valueC = 0;
int value;
while (true)
{
int j2 = 0;
valueA = rand.Next(minValue, maxValue);
valueB = rand.Next(minValue, maxValue);
if (valueA > valueB)
{
value = valueA;
}
else if (valueA < valueB)
{
value = valueB;
}
else
{
continue;
}
j2 = value;
while (true)
{
if (j2 % valueA == 0 && j2 % valueB == 0)
{
valueC = j2;
break;
}
j2++;
}
break;
}
string questionText = string.Format("请选{0}和{1}的最小公倍数。", valueA, valueB);
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, valueC / 2, valueC * 2, false,
(c => (c == valueC)), valueC))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal valueO = System.Convert.ToDecimal(content.Content);
if (valueC == valueO)
{
strBuilder.AppendLine(string.Format("{0}能同时被{1}和{2}整除，且是所有能被整除的数里面最小的数，是正确答案。", valueO, valueA, valueB));
}
else
{
if (valueO % valueA == 0 && valueO % valueB == 0)
{
strBuilder.AppendLine(string.Format("{0}能同时被{1}和{2}整除，但不是所有能被整除的数里面最小的数。", valueO, valueA, valueB));
}
else
{
strBuilder.AppendLine(string.Format("{0}不能同时被{1}和{2}整除。", valueO, valueA, valueB));
}
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
}
private void CreateMCQuestion(SectionBaseInfo sectionInfo, Section section)
{
int minValue = 10;
int maxValue = 100;
if (sectionInfo is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = sectionInfo as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
if (section.QuestionCollection.Count == 0)
{
this.questionValueList.Clear();
}
Random rand = new Random((int)DateTime.Now.Ticks);
int valueA = 0, valueC = 0;
//valueA = rand.Next(minValue, maxValue);
while (true)
{
int sumCommonDivisor = 0;
valueA = rand.Next(minValue, maxValue);
//valueB = rand.Next(minValue, maxValue);
//if (valueA < valueB)
// valueC = valueA;
//else if (valueA > valueB)
// valueC = valueB;
//else
// continue;
for (int j2 = 1; j2 < valueA; j2++)
{
if (valueA % j2 == 0)
{
sumCommonDivisor++;
}
}
if (sumCommonDivisor >= 4)
{
break;
}
}
string questionText = string.Format("请选出与{0}互质的数。", valueA);
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, minValue, maxValue, false,
(c) =>
{
int sumCommonDivisor = 0;
if (valueA < c)
{
valueC = valueA;
}
else if (valueA > c)
{
valueC = decimal.ToInt32(c);
}
else
{
return(false);
}
for (int j2 = 1; j2 < valueC; j2++)
{
if (valueA % j2 == 0 && c % j2 == 0)
{
sumCommonDivisor++;
}
}
if (sumCommonDivisor == 1)
{
return(true);
}
return(false);
}
))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
int sumCommonDivisor = 0;
if (valueA < value)
{
valueC = valueA;
}
else
{
valueC = decimal.ToInt32(value);
}
for (int j2 = 1; j2 < valueC; j2++)
{
if (valueA % j2 == 0 && value % j2 == 0)
{
sumCommonDivisor++;
}
}
if (sumCommonDivisor == 1)
{
strBuilder.AppendLine(string.Format("{0}和{1}只有公约数1，是正确答案。", valueA, value));
}
else
{
strBuilder.AppendLine(string.Format("{0}和{1}有{2}个公约数。", valueA, value, sumCommonDivisor));
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
}