算法大比拼(看看谁是真真的高手)?(java C# C++ C的高手请进)

[无聊的一个人啊]

求算一任意长度字符串中不同的字符以及它的个数?(设计一个漂亮的算法,快而优美)
如在 字符串"abcdefgabc"中求算出的结果是
a,2
b,2
c,2
d,1
e,1
f,1
g,1

以一个普通的算法开个头吧.
public static class MyMethod
{
public static Queue<char> GetOnlyCharFromString(string str)
{
Queue<char> myQueue = new Queue<char>();
for (int i = 0; i < str.Length; i++)
{
if (myQueue.Contains(str[i]) == false)
myQueue.Enqueue(str[i]);
}
return myQueue;
}
public static Dictionary<char,int> GetInfoFormString(string str)
{
Queue<char> myQueue = GetOnlyCharFromString(str );
Dictionary<char,int> myDictionary=new Dictionary<char,int>();
int oldQueueCount = myQueue.Count;//记录下它原有的量;
for(int i=0;i<oldQueueCount ;i++)
{
char myChar=myQueue.Dequeue();
int num=0;
for(int j=0;j<str.Length;j++)
{
if(str[j]==myChar)
num++;
}
myDictionary.Add(myChar,num);
}
return myDictionary;
}

}

[zhxi55]

"abcdefgabc"
.GroupBy(c => c)
.Select(g => String.Format("{0}, {1}", g.Key, g.Count()))
.ToList<string>().ForEach(p => Console.WriteLine(p));

[zhxi55]

"abcdefgabc"
.GroupBy(c => c)
.Select(g => String.Format("{0}, {1}", g.Key, g.Count()))
.ToList<string>().ForEach(p => Console.WriteLine(p));

[zhxi55]

            "abcdefgabc"
                .GroupBy(c => c)
                .Select(g => String.Format("{0}, {1}", g.Key, g.Count()))
                .ToList<string>().ForEach(p => Console.WriteLine(p)); 

[cppConst]

#include <iostream>
using namespace std;

void Handle(const char* const szStr)
{
	if ( NULL == szStr ) return ;

	const int conAsc = 128;
	int nCount[conAsc] = {0};
	char* pCur = (char*)szStr;
	char cCur = *szStr;

	while ( cCur )
	{
		nCount[cCur]++;
		cCur = *++pCur;
	}

	for (int i = 0; i < conAsc; i++)
	{
		cout<< (char)i << "'s count = " << nCount[i] <<"\n";
	}

	cout<<endl;
}

[cppConst]

注：上面代码忽略 0 的计数的正确性.

[honey1314]

受教了

[jenny0810]

标记

[fengxingphp]

\
string str = "abcdefgabc";
var result = from c in str
group c by c into g
select g;
foreach (var group in result)
Console.WriteLine(group.Key + "," + group.Count())……
\

[hebets]

mark一下展位有空写一个

[motnil]

def count(string):
    s = list(set(string))
    print s
    length = len(s)
    for c in s:
        b = string.count(c)
        print "there is %d %c in the string" % (b,c)
if __name__ == "__main__":
    string = raw_input("please enter a string:\n")
    count(string)

[rowzixin]

很牛哦

[BoyBaiDui]

string s= "abcdefg";
for(int i=0;i<s.length;i++)
{
   convert.WriteLine(s.char(i));
}

[louis_vivien]

学习 学习

[chunquanwang]

大虾不少啊！

[q734193444]

using System;
namespace Text
{
class YouMother
{
}
}

[q734193444]

using System;
namespace Text
{
class YouMother
{
}
}

[諾临風]

[lbc2247117]

哎~~~ 我悲剧了，4楼的我看不懂

[fesly]

我最喜歡LINQ了

[ktei2008]

这破帖子都能成为精品？