2023 - Day 3 part 1

2023/3/3.py

@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+# 2023 - Advent Of Code 3
+
+# file = 'input_example.txt'
+file = 'input.txt'
+
+
+def is_num(char):
+    if '0' <= char <= '9':
+        return True
+    return False
+
+
+def parse_num(y, x):
+    pos = x
+    # print(f'begin pos: {pos}')
+    while pos > 0 and is_num(input_lines[y][pos-1]):
+        pos -= 1
+    # print(f'begin pos: {pos}')
+    n = ""
+    while pos < len(input_lines[y]) and is_num(input_lines[y][pos]):
+        n += input_lines[y][pos]
+        pos += 1
+    print(f'num: {int(n)}')
+    return int(n), pos
+
+
+accum = 0
+# pylint: disable=consider-using-with
+input_lines = [line.strip('\n') for line in open(file, encoding="utf-8")]
+
+# print(input_lines[y][x])
+
+for linenum, line in enumerate(input_lines):
+    last_pos = 0
+    for charnum, c in enumerate(line):
+        if c != '.' and c < '0' or c > '9':
+            print(f'found {c} at {charnum},{linenum}')
+            if linenum > 0 and charnum > 0:
+                if is_num(input_lines[linenum-1][charnum-1]):
+                    # print('7')
+                    number, last_pos = parse_num(linenum-1, charnum-1)
+                    accum += number
+            if linenum > 0 and last_pos < charnum:
+                if is_num(input_lines[linenum-1][charnum]):
+                    # print('8')
+                    number, last_pos = parse_num(linenum-1, charnum)
+                    accum += number
+            if last_pos < charnum+1:
+                if is_num(input_lines[linenum-1][charnum+1]):
+                    # print('9')
+                    number, last_pos = parse_num(linenum-1, charnum+1)
+                    accum += number
+            last_pos = 0
+            if charnum > 0:
+                if is_num(line[charnum-1]):
+                    # print('4')
+                    number, last_pos = parse_num(linenum, charnum-1)
+                    accum += number
+            if is_num(line[charnum+1]):
+                # print('6')
+                number, last_pos = parse_num(linenum, charnum+1)
+                accum += number
+            last_pos = 0
+            if linenum < len(input_lines) and last_pos < charnum:
+                if is_num(input_lines[linenum+1][charnum-1]):
+                    # print('1')
+                    number, last_pos = parse_num(linenum+1, charnum-1)
+                    accum += number
+            if last_pos < charnum:
+                if is_num(input_lines[linenum+1][charnum]):
+                    # print('2')
+                    number, last_pos = parse_num(linenum+1, charnum)
+                    accum += number
+            if linenum < len(input_lines) and last_pos < charnum+1:
+                if is_num(input_lines[linenum+1][charnum+1]):
+                    # print('3')
+                    number, last_pos = parse_num(linenum+1, charnum+1)
+                    accum += number
+
+
+print(f"sum: {accum}")

2023/3/input.txt

@@ -0,0 +1,140 @@
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+................942.......*...874...*......407...558............752......*196.274.240.345...*.....-..105...................164...........466
+....+............&.....593...........516............-....=.....*....74.....................377..157................128...........175*.......
+....314.750......................497...........258.....549...70.....*....745.....289*418.................351........../..............839....
+..........*.......786......283......*366..........*...............899.....*......................652.......@...219..........................
+........468..=249..........*..........................866.797*960..........234.......252-.686.......=............$...................&......
+..386.............582....681...52....$369.+.......969..+........................276........*.................873.....824.......%627..51..25.
+.....-......835..@....*....................101.......*.......444...........587...*..33....847...............&.......=.......................
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2023/3/input_example.txt

@@ -0,0 +1,10 @@
+467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..