day 3

python/Day 3/main.py

@@ -1,7 +1,9 @@
 from io import open
 import re
 import numpy as np
+from itertools import product
 
+#Hay algo mal y no sé qué es
 # We open the txt document containing the games
 input=open('input.txt','r')
 
@@ -16,7 +18,7 @@ symbols=[]
 matches=[]
 list_text=[]
 
-#Eliminamos los números y los puntos para obtener los dígitos diferentes/símbolos que hay
+#Eliminamos los números y los puntos para obtener los símbolos que hay
 numbers=[]
 for i in range(0,10):
     numbers.append(str(i))
@@ -35,8 +37,44 @@ for position,line in enumerate(text):
     del(list_text[position][-1])
     for symbol in symbols:
         try:
-            #print(symbol,position,texto[position].index(symbol))
+            #print(symbol,position,text[position].index(symbol))
             find=position,list_text[position].index(symbol)
             matches.append(find)
         except ValueError:
-            pass
+            pass
+
+#Identificamos las posiciones alrededor del símbolo que tiene números y los guardamos en una variable que se llama position_numbers=[]
+position_numbers=[]
+for symbol in matches:
+    row_option=symbol[0]
+    column_option=symbol[1]
+    extra_positions = len(str(symbol[0]))
+    #iteramos las posiciones que están alrededor del símbolo mediante iteración
+    posible_rows=list(range(max(0,row_option-1),min(row_option+2,len(text)))) #+2 porque el range no incluye el último número, len(text)=número filas máxima
+    posible_columns=list(range(max(0,column_option-1),min(column_option+extra_positions+1,len(text))))
+    #Guardamos las posiciones de los números que rodean a los simbolos
+    combinations_numbers=list(product(posible_rows,posible_columns))
+    for number in combinations_numbers:
+        value=text[number[0]][number[1]]
+        if value.isdigit():
+            position_numbers.append((number[0],number[1]))
+
+#Una vez tenemos los dígitos que rodean a los simbolos hay que ver si tienen números adyacentes a estos para agrupar los números
+visit_numbers=[]
+final_numbers=[]
+for row,column in position_numbers:
+    first_col=column
+    last_col=column
+    if (row,column) not in visit_numbers:
+        while text[row][first_col].isdigit() and first_col >= 0:
+            visit_numbers.append((row, first_col))
+            first_col = first_col - 1
+        try:
+            while text[row][last_col].isdigit() and last_col < len(text):
+                visit_numbers.append((row, last_col))
+                last_col = last_col + 1
+        except:
+            pass
+        final_numbers.append(int(text[row][first_col+1:last_col])) 
+            
+print(sum(final_numbers))

python/Day 3/main2.py

@@ -0,0 +1,62 @@
+from io import open
+import re
+import numpy as np
+from itertools import product
+
+# We open the txt document containing the games
+input=open('input.txt','r')
+
+# We read the text inside distinguishing by lines
+lines = input.readlines()
+
+# Close the txt file to be able to work on the text without having the file open.
+input.close()
+del(input)
+
+for i in range(len(lines)):
+    lines[i] = lines[i].replace("\n", "")
+
+list_symbols = []
+cont_row = 0
+for line in lines:
+    cont_col = 0
+    for letter in line:
+        if letter != '.' and not letter.isdigit():
+            list_symbols.append((letter, cont_row, cont_col))
+        cont_col += 1
+    cont_row += 1
+ 
+pos_numbers = []
+for option in list_symbols:
+    row_option = option[1]
+    col_option = option[2]
+    extra_positions = len(str(option[0]))
+    possible_rows = list(range(max(0, row_option-1), min(row_option+2, len(lines))))
+    possible_columns = list(range(max(0, col_option-1), min(col_option+extra_positions+1, len(lines[0]))))
+    combinations = list(product(possible_rows, possible_columns))
+    checked = False
+    for combination in combinations:
+        value = lines[combination[0]][combination[1]]
+        if value.isdigit():
+            pos_numbers.append((combination[0], combination[1]))
+            checked = True   
+ 
+visited_numbers = []
+final_numbers = []
+for row, col in pos_numbers:
+    first_col = col
+    last_col = col
+    if (row, col) not in visited_numbers:
+        while lines[row][first_col].isdigit() and first_col >= 0:
+            visited_numbers.append((row, first_col))
+            first_col = first_col - 1
+        try:
+            while lines[row][last_col].isdigit() and last_col < 140:
+                visited_numbers.append((row, last_col))
+                last_col = last_col + 1
+#                 print(last_col)
+        except:
+            pass
+        final_numbers.append(int(lines[row][first_col+1:last_col]))
+ 
+print(sum(final_numbers))