题目描述：被小鱼一连将了两军，你心里更加不服气了。两个人一起继续往前走， 一路上杂耍卖艺的很多，但是你俩毫无兴趣，直直的就冲着下一个谜题的地方去了。 到了一看，这个谜面看起来就已经有点像答案了样子了，旁边还画着一张画，是一副农家小院的 图画，上面画着一个农妇在栅栏里面喂5只小鸡，你嘿嘿一笑对着小鱼说这次可是我先找到答案了
ccehgyaefnpeoobe{lcirg}epriec_ora_g
# -*- coding: utf-8 -*-
'''
helloworldgoodmorningxxxx 5
h l r x
e r d o n x
l o g m i x
l w o d n x
o o g
hlrnerdonilogmiqlwodnxoog
7
5 1
3 3
1 5
7
helloworldgoodmorningxxxx 4
h o o i x
e w r o d n n x
l o l g m r g x
l d o x
hooixewrodnnxlolgmrgxldox
5
3 1
1 3
5
'''
def enc(plain, num):
matrix = [([0] * len(plain)) for i in range(num)]
# 获取i的取值序列
i_s = []
for a in range(num):
i_s.append(a)
for a in range(num - 2, 0, -1):
i_s.append(a)
i_s_len = len(i_s)
# 按规则写入
i = 0
for c in plain:
matrix[i_s[i % i_s_len]][i] = c
i += 1
# 排除空值，从头到尾取出
encrypted = ''
for i in range(num):
for j in range(len(plain)):
if matrix[i][j]:
encrypted += matrix[i][j]
# 临时输出
# for i in range(num):
# for j in range(len(plain)):
# print (matrix[i][j], ' ')
# print()
return encrypted
def dec(encrypted, num):
matrix = [([0] * len(encrypted)) for i in range(num)]
cur = 0
for i in range(num): # 按行来填
# 生成每行空格个数的取值序列
if i == 0: # 第1行和最后一行，只需要一个取值就好了
pair = [(num-(i+1))*2-1]
elif i == num-1:
pair = [i*2-1]
else:
pair = [(num-(i+1))*2-1, i*2-1]
# 按规则填入
pair_i = 0
j = i
while True:
if cur < len(encrypted):
matrix[i][j] = encrypted[cur]
cur += 1
j += pair[pair_i % len(pair)]+1 # 这里要加1，直接加间隔是不够的
pair_i += 1
if j >= len(encrypted):
break
# 临时输出
# for i in range(num):
# for j in range(len(encrypted)):
# print (matrix[i][j], ' ')
# print()
# 获取i的取值序列
i_s = []
for a in range(num):
i_s.append(a)
for a in range(num - 2, 0, -1):
i_s.append(a)
i_s_len = len(i_s)
# 按规则取出
decrypted = ''
for j in range(len(encrypted)):
decrypted += matrix[i_s[j % i_s_len]][j]
return decrypted
encrypted = 'ccehgyaefnpeoobe{lcirg}epriec_ora_g'
num = 5
for i in range(2,len(encrypted)):
print('分为'+str(i)+'栏时，解密结果为：'+dec(encrypted, i) )
'''
hooixewrodnnxlolgmrgxldox
helloworldgoodmorningxxxx
cyberpeace{railfence_cipher_gogogo}
'''
