python字符数量_python计算子字符串的数量
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#coding=utf-8
def countSubStr(str1):
dict1 = {}
list1 = []
s_len = len(str1) + 1
if s_len<2:
return dict;
for i in range(0,s_len):
for j in range(i+2,s_len):
list1.append(str1[i:j])
for s in list1:
# print('%s-%s' % (s,list1.count(s)))
dict1.setdefault(s,list1.count(s)) # 去重
return dict1
res = countSubStr('abcabcd')
print(res)
res = countSubStr('abc')
print(res)
结果：
{'ab': 2, 'abc': 2, 'abca': 1, 'abcab': 1, 'abcabc': 1, 'abcabcd': 1, 'bc': 2, 'bca': 1, 'bcab': 1, 'bcabc': 1, 'bcabcd': 1, 'ca': 1, 'cab': 1, 'cabc': 1, 'cabcd': 1, 'abcd': 1, 'bcd': 1, 'cd': 1}
{'ab': 1, 'abc': 1, 'bc': 1}
另一版：
#coding=utf-8
sString = 'abcabcd'
len = len(sString)
list = []
list1 = []
i = 0
if len <= 1 :
print("")
else:
while (i <= len):
j = i+2
while (j <= len):
list.append(sString[i:j])
if sString[i:j] not in list1:
list1.append(sString[i:j])
j += 1
i += 1
print (list1)
for k in list1:
print(k,list.count(k))
原文链接:http://fanson-g.iteye.com/blog/2429116