public static void pgdoj(Calculatedaverage per)
{
var b = from a in per
where !a.Name.Contains("欧阳")
group a by a.Name.Substring(0, 1)
into box
select new { box.Key, sum = box.Count() };
foreach (var i in b)
{
Console.WriteLine("姓：{0}，人数：{1}", i.Key, i.sum);
}
var name = from a in per
where a.Name.Contains("欧阳")
group a by a.Name.Substring(0, 2)
into box
select new { box.Key, sum = box.Count() };
foreach (var i in name)
{
Console.WriteLine("姓：{0}，人数：{1}", i.Key, i.sum);
}
Console.Read();
}
/// <summary>
/// 使用 IList 的扩展方法 GroupBy 来获取来自哪些省份的数据
/// </summary>
/// <param name="persons"></param>
/// <returns></returns>
public static List <string> GetProvincesGroupBy(Calculatedaverage persons)
{
var result = new List <string>();
foreach (var item in persons.GroupBy(x => x.Province))
{
result.Add(item.Key);
}
return(result);
}
/// <summary>
/// 提取人员集合中，来自哪些省份的数据
/// </summary>
/// <param name="persons"></param>
/// <returns></returns>
public static List <string> GetProvinces(Calculatedaverage persons)
{
var result = new List <string>();
foreach (var item in persons)
{
if (!result.Contains(item.Province))
{
result.Add(item.Province);
}
}
return(result);
}
/// <summary>
/// 使用 IList 的扩展方法 GroupBy 每个省份有多少人
/// </summary>
/// <param name="persons"></param>
/// <returns></returns>
public static List <PersonsInProvince> GetProvincesPersons(Calculatedaverage persons)
{
var result = new List <PersonsInProvince>();
foreach (var item in persons.GroupBy(x => x.Province))
{
var data = new PersonsInProvince
{
ProvinceName = item.Key,
Amount = item.Count()
};
result.Add(data);
}
return(result);
}
/// <summary>
/// 计算平均年龄
/// </summary>
/// <param name="persons">人员的 List 集合</param>
/// <returns></returns>
public static string AverageAge(Calculatedaverage persons)
{
var result = "";
var totalDays = 0; // 所有人员的全部天数
var now = DateTime.Now;
foreach (var item in persons)
{
totalDays = totalDays + Math.Abs(((TimeSpan)(now - item.Birthday)).Days);
}
var avgTotaldays = totalDays / persons.Count;
var avgYears = avgTotaldays / 365;
var avgDays = avgTotaldays - avgYears * 365;
result = "平均年龄：" + avgYears + "周岁" + "-" + avgDays + "天";
return(result);
}
public PersonEnumerator(Calculatedaverage collection)
{
_collection = collection;
curIndex = -1;
curPerson = default(Person);
}
/// <summary>
/// 初始化一组人员数据
/// </summary>
/// <returns></returns>
public static Calculatedaverage InitialPersonList()
{
var persons = new Calculatedaverage();
#region 初始化人员数据
persons.Add(new Person {
Name = "张小祎", Province = "北京", City = "北京", Sex = true, Birthday = DateTime.Parse("1964-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "李珊柳", Province = "北京", City = "北京", Sex = false, Birthday = DateTime.Parse("1966-02-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "李华语", Province = "河北", City = "石家庄", Sex = true, Birthday = DateTime.Parse("1966-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "黄慧琳", Province = "河北", City = "廊坊", Sex = false, Birthday = DateTime.Parse("1966-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "潘加伟", Province = "河北", City = "唐山", Sex = true, Birthday = DateTime.Parse("1963-10-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "秦小梨", Province = "河北", City = "唐山", Sex = false, Birthday = DateTime.Parse("1966-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "覃晓琳", Province = "河北", City = "石家庄", Sex = true, Birthday = DateTime.Parse("1968-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "韦长英", Province = "广西", City = "柳州", Sex = true, Birthday = DateTime.Parse("1969-03-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "韦大东", Province = "广西", City = "南宁", Sex = true, Birthday = DateTime.Parse("1969-03-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "韦家文", Province = "广西", City = "柳州", Sex = true, Birthday = DateTime.Parse("1969-03-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "黎文新", Province = "广西", City = "柳州", Sex = true, Birthday = DateTime.Parse("1969-03-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "黎子流", Province = "广东", City = "广州", Sex = true, Birthday = DateTime.Parse("1969-03-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "余卫东", Province = "广东", City = "广州", Sex = true, Birthday = DateTime.Parse("1969-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "何家宝", Province = "广东", City = "广州", Sex = true, Birthday = DateTime.Parse("1970-08-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "何欣俊", Province = "广东", City = "广州", Sex = true, Birthday = DateTime.Parse("1970-08-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "余华亮", Province = "广东", City = "广州", Sex = true, Birthday = DateTime.Parse("1970-08-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "汤富贵", Province = "广东", City = "广州", Sex = true, Birthday = DateTime.Parse("1970-08-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "唐富贵", Province = "广东", City = "广州", Sex = true, Birthday = DateTime.Parse("1970-08-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "唐蔚佳", Province = "广东", City = "深圳", Sex = false, Birthday = DateTime.Parse("1964-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "谢显才", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1972-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "解晓东", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1972-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "谢家麟", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1972-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "谢子怡", Province = "广东", City = "深圳", Sex = false, Birthday = DateTime.Parse("1973-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "张建光", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "李振书", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "陈丰州", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "陈卫东", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "陈峰受", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "陈金健", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "韦海波", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "祁宣明", Province = "广东", City = "深圳", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "戚计生", Province = "上海", City = "上海", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "石智生", Province = "广西", City = "柳州", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "苏晓琳", Province = "广西", City = "柳州", Sex = false, Birthday = DateTime.Parse("1989-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "苏振彪", Province = "广西", City = "柳州", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "谭家伟", Province = "广西", City = "柳州", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "谭俊杰", Province = "广西", City = "桂林", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "王定祠", Province = "广西", City = "桂林", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "王金生", Province = "广西", City = "北海", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "王宝军", Province = "广西", City = "钦州", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "吴克标", Province = "广西", City = "防城港", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "吴斌", Province = "江西", City = "南昌", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "游毅峰", Province = "湖南", City = "长沙", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "柳君华", Province = "湖南", City = "长沙", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "刘小薇", Province = "湖南", City = "郴州", Sex = false, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "陈东风", Province = "湖南", City = "衡阳", Sex = true, Birthday = DateTime.Parse("1999-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "欧阳海", Province = "湖南", City = "长沙", Sex = true, Birthday = DateTime.Parse("1985-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "柳三变", Province = "湖南", City = "邵阳", Sex = true, Birthday = DateTime.Parse("1986-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "郭骁", Province = "北京", City = "北京", Sex = true, Birthday = DateTime.Parse("1996-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "郭家铭", Province = "香港", City = "香港", Sex = true, Birthday = DateTime.Parse("1996-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "陈兆年", Province = "四川", City = "成都", Sex = true, Birthday = DateTime.Parse("1996-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "农卫红", Province = "四川", City = "成都", Sex = false, Birthday = DateTime.Parse("2000-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "农志升", Province = "四川", City = "成都", Sex = true, Birthday = DateTime.Parse("1989-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "农小琳", Province = "四川", City = "攀枝花", Sex = true, Birthday = DateTime.Parse("1988-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "徐荣国", Province = "四川", City = "泸州", Sex = true, Birthday = DateTime.Parse("1996-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "聂小威", Province = "四川", City = "泸州", Sex = true, Birthday = DateTime.Parse("1996-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "邱福林", Province = "四川", City = "泸州", Sex = true, Birthday = DateTime.Parse("1996-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "范思坦", Province = "四川", City = "泸州", Sex = true, Birthday = DateTime.Parse("1996-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "邓唯佳", Province = "四川", City = "泸州", Sex = false, Birthday = DateTime.Parse("1998-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "马晓东", Province = "云南", City = "昆明", Sex = true, Birthday = DateTime.Parse("1999-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "魏明翠", Province = "云南", City = "昆明", Sex = false, Birthday = DateTime.Parse("2000-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "尹相杰", Province = "贵州", City = "贵阳", Sex = true, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
persons.Add(new Person {
Name = "张小祎", Province = "贵州", City = "凯里", Sex = false, Birthday = DateTime.Parse("1993-09-08"), Email = "*****@*****.**"
});
#endregion
return(persons);
}