4 files changed, 92 insertions, 13 deletions

diff --git a/challenge-151/lubos-kolouch/perl/ch-1.pl b/challenge-151/lubos-kolouch/perl/ch-1.pl
index ba464fb82d..c60f681143 100644
--- a/challenge-151/lubos-kolouch/perl/ch-1.pl
+++ b/challenge-151/lubos-kolouch/perl/ch-1.pl
@@ -1,6 +1,5 @@
 use strict;
 use warnings;
-use Data::Dumper;
 
 sub get_min_depth {
     my $input = shift;
@@ -9,24 +8,25 @@ sub get_min_depth {
 
     # iterate through the layers. If the next layer does not have 2^n items,
     # there must be a leaf node
-    
-    $input =~ s/\s//g;
+
     my @layers = split /\|/, $input;
 
     my $layer_count = 1;
     for my $layer (@layers) {
+
         # if not defined means we are at the last layer
         return $layer_count unless defined $layers[$layer_count];
 
-        my $items_count = length($layers[$layer_count]);
-        return $layer_count unless $items_count == 2**$layer_count;
+        my $items_count = scalar( split /\s+/, $layers[$layer_count] );
+        return $layer_count unless $items_count == 2**$layer_count + 1;
 
         $layer_count++;
     }
 }
 
 use Test::More;
-is(get_min_depth('1 | 2 3 | 4 5'), 2);
-is(get_min_depth('1 | 2 3 | 4 *  * 5 | * 6'), 3);
-done_testing;
+is( get_min_depth('1 | 2 3 | 4 5'),             2 );
+is( get_min_depth('1 | 2 3 | 4 *  * 5 | * 6'),  3 );
+is( get_min_depth('1 | 20 3 | 4 *  * 5 | * 6'), 3 );
 
+done_testing;
diff --git a/challenge-151/lubos-kolouch/php/ch-1.php b/challenge-151/lubos-kolouch/php/ch-1.php
new file mode 100644
index 0000000000..70ecb63717
--- /dev/null
+++ b/challenge-151/lubos-kolouch/php/ch-1.php
@@ -0,0 +1,35 @@
+<?php
+
+function get_min_depth($input) {
+
+    #Input: '1 | 2 3 | 4 5'
+
+    # iterate through the layers. If the next layer does not have 2^n items,
+    # there must be a leaf node
+    
+    $layers = preg_split("/\|/", $input);
+
+    $layer_count = 1;
+    foreach ($layers as $layer) {
+        # if not defined means we are at the last layer
+
+        try {
+            $items_count = count(preg_split("/\s+/",$layers[$layer_count]));
+            if ($items_count != 2**$layer_count+2) {
+                return $layer_count; 
+            }
+
+            $layer_count++;
+
+        } catch (Exception $e) {
+         return $layer_count;
+        }
+
+    }
+}
+
+get_min_depth('1 | 2 3 | 4 5') == 2 or throw new Exception('Test failed');
+get_min_depth('1 | 2 3 | 4 *  * 5 | * 6') == 3 or throw new Exception('Test 2 failed');
+
+
+?>
diff --git a/challenge-151/lubos-kolouch/php/ch-2.php b/challenge-151/lubos-kolouch/php/ch-2.php
new file mode 100644
index 0000000000..b31e33d9ad
--- /dev/null
+++ b/challenge-151/lubos-kolouch/php/ch-2.php
@@ -0,0 +1,41 @@
+<?php
+
+$cache = [];
+
+function get_houses_max($houses) {
+
+    global $cache;
+
+    if (in_array(implode(",",$houses), $cache)) {
+        return $cache[implode(",",$houses)];
+    }
+        
+    $max_value = 0;
+    $house_index = 0;
+
+    foreach (array_slice($houses, 2) as $house) {
+        $next_houses_values = get_houses_max(array_slice($houses, 2+$house_index));
+        if ($next_houses_values > $max_value) {
+            $max_value = $next_houses_values;       
+        }
+
+        $house_index++;
+    }
+
+    $cache[implode(",",$houses)] = $houses[0] + $max_value;
+    return $houses[0] + $max_value;
+
+}
+
+
+if (get_houses_max([2,4,5]) != 7) {
+    throw new Exception('Failed test 1');
+}
+
+$cache = [];
+
+if (get_houses_max([4, 2, 3, 6, 5, 3]) != 13) {
+    throw new Exception('Failed test 2');
+
+}
+?>
diff --git a/challenge-151/lubos-kolouch/python/ch-1.py b/challenge-151/lubos-kolouch/python/ch-1.py
index fd34a05784..b30797ece3 100644
--- a/challenge-151/lubos-kolouch/python/ch-1.py
+++ b/challenge-151/lubos-kolouch/python/ch-1.py
@@ -1,21 +1,22 @@
 import re
 
 
-def get_min_depth(input: str):
+def get_min_depth(my_input: str):
     """Calculate the depth"""
     # Input: '1 | 2 3 | 4 5'
 
     # iterate through the layers. If the next layer does not have 2^n items,
     # there must be a leaf node
 
-    input = re.sub(r"\s", "", input)
-    layers = input.split("|")
+    layers = my_input.split("|")
 
     for layer_count, _ in enumerate(layers, 1):
         # if not defined means we are at the last layer
-
         try:
-            items_count = len(layers[layer_count])
+            layers[layer_count] = re.sub(r"^\s+", "", layers[layer_count])
+            layers[layer_count] = re.sub(r"\s+$", "", layers[layer_count])
+
+            items_count = len(re.split(r"\s+", layers[layer_count]))
         except IndexError:
             return layer_count
 
@@ -27,4 +28,6 @@ def get_min_depth(input: str):
 
 assert get_min_depth("1 | 2 3 | 4 5") == 2
 assert get_min_depth("1 | 2 3 | 4 *  * 5 | * 6") == 3
+assert get_min_depth("1 | 20 3 | 4 *  * 5 | * 6") == 3
+
 assert get_min_depth("1 | 2 3") == 2