Challenge 077 Task 2 Perl Python Lubos Kolouch

2 files changed, 58 insertions, 3 deletions

diff --git a/challenge-077/lubos-kolouch/python/ch-1.py b/challenge-077/lubos-kolouch/python/ch-1.py
index d181c21487..9bb92ec317 100644
--- a/challenge-077/lubos-kolouch/python/ch-1.py
+++ b/challenge-077/lubos-kolouch/python/ch-1.py
@@ -1,7 +1,7 @@
 #!/bin/env python
-""" Perl Weekly challenge 077 Task 1 """
-""" https://perlweeklychallenge.org/blog/perl-weekly-challenge-077/ """
-""" Solution Lubos Kolouch """
+""" Perl Weekly challenge 077 Task 1
+    https://perlweeklychallenge.org/blog/perl-weekly-challenge-077/
+    Solution Lubos Kolouch """
 
 
 class FibSolver:
diff --git a/challenge-077/lubos-kolouch/python/ch-2.py b/challenge-077/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..f77995658d
--- /dev/null
+++ b/challenge-077/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,55 @@
+#!/bin/env python
+""" Perl Weekly challenge 077 Task 2
+    https://perlweeklychallenge.org/blog/perl-weekly-challenge-077/
+    Solution Lubos Kolouch """
+
+
+class LoneX:
+    """ Class for solving the challenge """
+
+    def __init__(self, matrix: list):
+        """ init the solution """
+        self.matrix = matrix
+        self.solution_count = 0
+
+    def count_lone(self):
+        """ count the occurences of lone X """
+
+        for line_nr, line in enumerate(self.matrix):
+            for col_nr, char in enumerate(line):
+                if char == "O":
+                    continue
+
+                is_lone = True
+                for d_x in [-1, 0, 1]:
+                    for d_y in [-1, 0, 1]:
+                        if d_x == d_y == 0:
+                            continue
+
+                        if line_nr + d_x < 0 or line_nr + d_x >= len(self.matrix):
+                            continue
+
+                        if col_nr + d_y < 0 or col_nr + d_y >= len(self.matrix):
+                            continue
+
+                        if self.matrix[line_nr + d_x][col_nr + d_y] == 'X':
+                            is_lone = False
+                            break
+
+                if is_lone:
+                    self.solution_count += 1
+
+    def get_count(self):
+        """ just return the solutions count """
+
+        return self.solution_count
+
+
+lonex = LoneX([['O', 'O', 'X'], ['X', 'O', 'O'], ['X', 'O', 'O']])
+lonex.count_lone()
+assert lonex.get_count() == 1
+
+lonex2 = LoneX([['O', 'O', 'X', 'O'], ['X', 'O', 'O', 'O'],
+                ['X', 'O', 'O', 'X'], ['O', 'X', 'O', 'O']])
+lonex2.count_lone()
+assert lonex2.get_count() == 2