[ACTF新生赛2020]frequency
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属性的详细信息里发现后半段信息
连在一块进行解码
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根据题目提示应该是频率统计，可以用网站或者脚本实现
https://www.lddgo.net/string/frequency-statistics
显然，flag是按照字频从大到小排列的（{和}除外）
flag{plokmijnuhbygvrdxeszwq}
脚本
import re
file = open('18.txt') #根据路径自行调整
line = file.readlines()
file.seek(0,0)
file.close()
result = {}
for i in range(97,123):
count = 0
for j in line:
find_line = re.findall(chr(i),j)
count += len(find_line)
result[chr(i)] = count
res = sorted(result.items(),key=lambda item:item[1],reverse=True)
num = 1
for x in res:
print('频数第{0}: '.format(num),x)
num += 1
得到结果
python 1.py
频数第1: ('a', 198)
频数第2: ('c', 194)
频数第3: ('t', 188)
频数第4: ('f', 180)
频数第5: ('p', 174)
频数第6: ('l', 170)
频数第7: ('o', 164)
频数第8: ('k', 159)
频数第9: ('m', 152)
频数第10: ('i', 145)
频数第11: ('j', 139)
频数第12: ('n', 133)
频数第13: ('u', 128)
频数第14: ('h', 116)
频数第15: ('b', 109)
频数第16: ('y', 106)
频数第17: ('g', 100)
频数第18: ('v', 92)
频数第19: ('r', 87)
频数第20: ('d', 79)
频数第21: ('x', 73)
频数第22: ('e', 68)
频数第23: ('s', 61)
频数第24: ('z', 54)
频数第25: ('w', 48)
频数第26: ('q', 41)
不过使用脚本会有一点点小问题，那就是{和}没有给统计上，需要手动加上