做hacker.org上面的题目时，遇到了一个题目需要对RFC3280种长度为9的单词进行计数，并找出这些单词中出现次数最多的那个：Didactic Byte
RFC3280文档有7000多行，靠人工是数不出来的，解决这种是就得编程了，而且很明显，在处理此类问题时脚本式比较方便的，果断选择python
先是将题意理解错了，理解为出现次数最多的九个字母， 然后等到程序运行好提交答案时才发现不对，唉，真是汗颜
既然程序写出来了，还是将其贴出来吧
文档中字母频率计数：
# find the occurence of single letter from a document
#import fileinput
test = “”
dicts = {}
# read content from a document
# we could use readline,readlines etc.
# also we could use fileinput.input(filename)
text = open(“RFC3280.txt”)
for line in text.readlines():
test += line.lower().replace(” “,””)
# use dictionary to store the occurence and it”s letter
for i in xrange(97,123):
letter = chr(i)
count = test.count(chr(i))
#print “the accoun