Merge pull request #10039 from 2colours/branch-for-challenges-266-267

PHP solutions for weeks 266 and 267

4 files changed, 70 insertions, 0 deletions

diff --git a/challenge-266/2colours/php/ch-1.php b/challenge-266/2colours/php/ch-1.php
new file mode 100644
index 0000000000..3079fd5dff
--- /dev/null
+++ b/challenge-266/2colours/php/ch-1.php
@@ -0,0 +1,14 @@
+<?php
+
+echo '$line1 = ';
+$line1 = preg_split('/\s+/', rtrim(fgets(STDIN)));
+echo '$line2 = ';
+$line2 = preg_split('/\s+/', rtrim(fgets(STDIN)));
+
+$word_frequencies = array_count_values($line1);
+foreach (array_count_values($line2) as $key => $value) {
+    @$word_frequencies[$key] += $value;
+}
+
+$solution = array_keys(array_filter($word_frequencies, fn($freq) => $freq === 1)) ?: [''];
+var_dump($solution);
diff --git a/challenge-266/2colours/php/ch-2.php b/challenge-266/2colours/php/ch-2.php
new file mode 100644
index 0000000000..c8f7064f37
--- /dev/null
+++ b/challenge-266/2colours/php/ch-2.php
@@ -0,0 +1,22 @@
+<?php
+
+$matrix = json_decode(file_get_contents('php://stdin'));
+$size = count($matrix[0]); # let's hope it's actually a square matrix...
+
+// all 0's except for those 2 - which may be one if it's the middle
+function is_row_compliant($row, $diagonal_position, $size)
+{
+    $is_middle = $diagonal_position === $size - 1 - $diagonal_position;
+    return @array_count_values($row)[0] === $size - ($is_middle ? 1 : 2) && $row[$diagonal_position] !== 0 && $row[$size - 1 - $diagonal_position] !== 0;
+}
+
+//[$diagonal_position, $solution] = array_reduce($matrix, fn ($state, $row) => [$state[0] + 1, $state[1] && is_row_compliant($row, $state[0], $size)], [0, true]); # is this really worth it? :D
+$solution = true;
+foreach ($matrix as $row_index => $row) {
+    if (!is_row_compliant($row, $row_index, $size)) {
+        $solution = false;
+        break;
+    }
+}
+
+var_dump($solution);
\ No newline at end of file
diff --git a/challenge-267/2colours/php/ch-1.php b/challenge-267/2colours/php/ch-1.php
new file mode 100644
index 0000000000..8b6b877a8a
--- /dev/null
+++ b/challenge-267/2colours/php/ch-1.php
@@ -0,0 +1,8 @@
+<?php
+
+function sign_of_product(array $ints)
+{
+    return array_reduce($ints, fn($acc, $current) => $acc * gmp_sign($current), 1);
+}
+
+echo 'The sign of the product is ' . sign_of_product(array_slice($argv, 1));
diff --git a/challenge-267/2colours/php/ch-2.php b/challenge-267/2colours/php/ch-2.php
new file mode 100644
index 0000000000..c824e95eea
--- /dev/null
+++ b/challenge-267/2colours/php/ch-2.php
@@ -0,0 +1,26 @@
+<?php
+
+const SCREEN_WIDTH = 100;
+echo '$str = ';
+$str = rtrim(fgets(STDIN));
+echo '@width = ';
+$width = array_combine(range('a', 'z'), explode(' ', rtrim(fgets(STDIN))));
+
+$current_line_number = 1;
+$current_line_content = '';
+$current_column = 0;
+$characters = str_split($str);
+
+foreach ($characters as $current_char) {
+    $current_width = $width[$current_char];
+    if ($current_column + $current_width > SCREEN_WIDTH) {
+        echo "Line $current_line_number: $current_line_content ($current_column pixels)\n";
+        $current_line_content = "$current_char";
+        $current_column = $current_width;
+        $current_line_number++;
+        continue;
+    }
+    $current_column += $current_width;
+    $current_line_content .= $current_char;
+}
+echo "Line $current_line_number: $current_line_content ($current_column pixels)";
\ No newline at end of file