using System; using System.Collections.Generic;
using System.Linq; using System.Text; using System.Threading.Tasks; namespace
计算字符{ class Program { static void Main(string[] args) {
string str = "Welecome to China world"; Dictionary dict=new Dictionary(); foreach (char ch in
str.ToLower()) { if (dict.ContainsKey(ch))
{ dict[ch]++; } else
{ dict[ch] = 1; } }
foreach (char cha in dict.Keys) {
Console.WriteLine(cha.ToString()+"="+dict[cha]); }
Console.ReadKey(); } } }计算重复字符
用Dictionary,通过dictionary[key]就可以得到其Value值,如果要得到key可以用Dictionary.key属性
Dictionary<Key,Value>的用法,布布扣,bubuko.com
Dictionary<Key,Value>的用法
原文:http://www.cnblogs.com/shangguanjinwen/p/3697144.html