Discussion on: Advent of code - Day 8

[Sau K]

Dec 8, 2020

Part 1

import pandas as pd

df = pd.read_csv('12082020adventofcode.txt', sep=' ',
header=None, names=['Instruction', 'Argument'])

ind_list = list(range(0, len(df)))
ind_flip = []
acc_value = 0
ind = 0
copy_ind = 0

def acc(arg):
global acc_value
acc_value += arg
global ind
ind += 1

def jmp(arg):
global ind
ind += arg

def nop(arg):
global ind
ind += 1

while ind in ind_list:
copy_ind = ind
instr = df.loc[ind,'Instruction']
argu = df.loc[ind,'Argument']
ind_list.remove(ind)
global ind_flip
ind_flip.append(ind)
if instr == 'acc':
acc(argu)
elif instr == 'jmp':
jmp(argu)
elif instr == 'nop':
nop(argu)

print('#####################################')
print('Part 1:')
print('final acc_value:', acc_value)
print('last run ind:', copy_ind)
print(df.loc[copy_ind,:])
print('repeated ind:', ind)
print(df.loc[ind,:])
print('ind_flip for part 2:', ind_flip)
print('#####################################')

part 2

ind_list = list(range(0, len(df)))
acc_value = 0
ind = 0
copy_ind = 0

def flip(row):
instru = df.loc[row,'Instruction']
if instru == 'jmp':
df.loc[row,'Instruction'] = 'nop'
elif instru == 'nop':
df.loc[row,'Instruction'] = 'jmp'

def while_loop(x):
global ind
ind = x
while ind in ind_list:
instr = df.loc[ind,'Instruction']
argu = df.loc[ind,'Argument']
global copy_ind
copy_ind = ind
ind_list.remove(ind)
if instr == 'acc':
acc(argu)
elif instr == 'jmp':
jmp(argu)
elif instr == 'nop':
nop(argu)

for i in ind_flip:
flip(int(i))
while_loop(ind)
flip(int(i))
if copy_ind == len(df)-1:
break
ind_list = list(range(0, len(df)))
acc_value = 0
ind = 0
copy_ind = 0

print('#####################################')
print('Part 2:')
print('last run ind:', copy_ind)
print('final acc_value:', acc_value)

print(df.loc[copy_ind,:])
print('#####################################')