#!usr/binenv python
#encoding:utf-8
 
'''
__Author__:沂水寒城
统计一个给定字符串中重复模式数量得到最高重复模式串
'''
 
def slice(num_str,w):
 '''
 对输入的字符串滑窗切片返回结果列表
 '''
 result_list=[]
 for i in range(len(num_str)-w+1):
  result_list.append(num_str[i:i+w])
 return result_list
 
def get_repeat_num_seq(num_str):
 '''
 统计重复模式串数量
 '''
 result_dict={}
 result_list=[]
 for i in range(2,len(num_str)):
  one_list=slice(num_str, i)
  result_list+=one_list
 for i in range(len(result_list)):
  if result_list[i] in result_dict:
   result_dict[result_list[i]]+=1
  else:
   result_dict[result_list[i]]=1
 sorted_result_dict=sorted(result_dict.items(), key=lambda e:e[1], reverse=True)
 return sorted_result_dict[0:10]
 
if __name__ == '__main__':
 num_list=get_repeat_num_seq('4513785645121214545454545457894')
 print num_list

[('45', 8), ('4545', 5), ('454', 5), ('545', 5), ('54', 5), ('5454', 4), ('454545', 4), ('45454', 4), ('54545', 4), ('545454', 3)]
[Finished in 0.5s]