using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ListMethod { class Program { static void Main(string[] args) { List<double> c = new List<double>(); c.Add(); c.Add();
1.首字母大写 语法:S.capitalize() -> str title = "today is a good day" title_ca = title.capitalize() print(title_ca) 结果:today is a good day 2.大写转小写 语法:S.casefold() -> str title = "TODAY is a GOOD day" title_ca = title.casefold() print(ti