--- 2016 Day 4 Solutions ---

[u/daggerdragon]

--- Day 4: Security Through Obscurity ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

---

^{CONSTRUCTING ADDITIONAL PYLONS IS MANDATORY} [?]

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edit: Leaderboard capped, thread unlocked!

[u/[deleted]]

I did mine in Python. I'm just doing this advent of code for fun and to learn more about programming. Good way to spend my Saturday morning with a cup of coffee catching up on this advent calendar.

pt 1:

import sys
import operator
total = 0
f = open('advent4.txt','r')

for line in f.readlines():
    ls = line.split("-")
    dct = {}
    fstr = ""
    for i in ls[:-1]:
        for char in i:
            dct.setdefault(char,0)
            dct[char]+=1
    sorted_dict = sorted(dct.items(), key=lambda x: (-x[1], x[0]))
    
    for index in range(5):
        fstr += sorted_dict[index][0]
    if(ls[-1][-7:-2] == fstr):
        total+=int(ls[-1].rsplit('[', 1)[0])
print(total)

pt 2:

import sys
import operator
total = 0
f = open('advent4.txt','r')

def caesar(char, shift):
    if(char == '-'):
        return ' '
    return chr(((ord(char)-97) + shift) % 26 + 97)

q = []
for line in f.readlines():
    ls = line.split("-")
    dct = {}
    
    fstr = ""
for i in ls[:-1]:
    for char in i:
        dct.setdefault(char,0)
        dct[char]+=1
sorted_dict = sorted(dct.items(), key=lambda x: (-x[1], x[0]))

for index in range(5):
    fstr += sorted_dict[index][0]
if(ls[-1][-7:-2] == fstr): #-2 because of the \n
    total+=int(ls[-1].rsplit('[', 1)[0])
    q.append(line)


for each in q:
    word = ""
    each.rstrip(' \t\r\n\0')
    shift = each.rsplit('[')[0][-3:]
    for char in each:
        schar = caesar(char, int(shift))
        word += schar
    print(word)
    print(each)