From 19352446d27a9bc6ffec1e288825c1a1f88eda22 Mon Sep 17 00:00:00 2001
From: Henry Wong <somethingweird@yahoo.com>
Date: Wed, 25 Nov 2020 11:45:47 -0500
Subject: Create README

---
 challenge-088/henry-wong/README | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 challenge-088/henry-wong/README

diff --git a/challenge-088/henry-wong/README b/challenge-088/henry-wong/README
new file mode 100644
index 0000000000..3d63a6f0be
--- /dev/null
+++ b/challenge-088/henry-wong/README
@@ -0,0 +1 @@
+Solution by Henry Wong
-- 
cgit 


From 1111ecd59ce4cc4e844dcdc5b5dc90130a145239 Mon Sep 17 00:00:00 2001
From: Henry Wong <somethingweird@yahoo.com>
Date: Wed, 25 Nov 2020 11:46:34 -0500
Subject: Create ch-1.php

---
 challenge-088/henry-wong/ch-1.php | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 challenge-088/henry-wong/ch-1.php

diff --git a/challenge-088/henry-wong/ch-1.php b/challenge-088/henry-wong/ch-1.php
new file mode 100644
index 0000000000..202052ca76
--- /dev/null
+++ b/challenge-088/henry-wong/ch-1.php
@@ -0,0 +1,17 @@
+<?php
+/**
+TASK #1 › Array of Product
+**/
+
+function solution($a) {
+  $b = array();
+  for ($i = 0; $i < count($a); $i++) {
+      $c = $a;
+      unset($c[$i]);
+      $b[] = array_product($c);
+  }
+  return $b;
+}
+
+$a = array(5, 2, 1, 4, 3);
+print_r(solution($a));
-- 
cgit 


From 33c35f58e0775528d066713cb20ce239f1a3037a Mon Sep 17 00:00:00 2001
From: Henry Wong <somethingweird@yahoo.com>
Date: Wed, 25 Nov 2020 11:51:15 -0500
Subject: Create ch-1.php

---
 challenge-088/henry-wong/php/ch-1.php | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 challenge-088/henry-wong/php/ch-1.php

diff --git a/challenge-088/henry-wong/php/ch-1.php b/challenge-088/henry-wong/php/ch-1.php
new file mode 100644
index 0000000000..202052ca76
--- /dev/null
+++ b/challenge-088/henry-wong/php/ch-1.php
@@ -0,0 +1,17 @@
+<?php
+/**
+TASK #1 › Array of Product
+**/
+
+function solution($a) {
+  $b = array();
+  for ($i = 0; $i < count($a); $i++) {
+      $c = $a;
+      unset($c[$i]);
+      $b[] = array_product($c);
+  }
+  return $b;
+}
+
+$a = array(5, 2, 1, 4, 3);
+print_r(solution($a));
-- 
cgit 


From d626c542817b6b5463c7fc36837219c86b32b953 Mon Sep 17 00:00:00 2001
From: Henry Wong <somethingweird@yahoo.com>
Date: Wed, 25 Nov 2020 11:51:32 -0500
Subject: Delete ch-1.php

wrong place
---
 challenge-088/henry-wong/ch-1.php | 17 -----------------
 1 file changed, 17 deletions(-)
 delete mode 100644 challenge-088/henry-wong/ch-1.php

diff --git a/challenge-088/henry-wong/ch-1.php b/challenge-088/henry-wong/ch-1.php
deleted file mode 100644
index 202052ca76..0000000000
--- a/challenge-088/henry-wong/ch-1.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-/**
-TASK #1 › Array of Product
-**/
-
-function solution($a) {
-  $b = array();
-  for ($i = 0; $i < count($a); $i++) {
-      $c = $a;
-      unset($c[$i]);
-      $b[] = array_product($c);
-  }
-  return $b;
-}
-
-$a = array(5, 2, 1, 4, 3);
-print_r(solution($a));
-- 
cgit 


From a5a0a4d9dfffe2b586e3f893082f92ac815c065e Mon Sep 17 00:00:00 2001
From: Henry Wong <somethingweird@yahoo.com>
Date: Wed, 25 Nov 2020 12:41:32 -0500
Subject: Create ch-2.php

---
 challenge-088/henry-wong/php/ch-2.php | 53 +++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 challenge-088/henry-wong/php/ch-2.php

diff --git a/challenge-088/henry-wong/php/ch-2.php b/challenge-088/henry-wong/php/ch-2.php
new file mode 100644
index 0000000000..d5154c58f0
--- /dev/null
+++ b/challenge-088/henry-wong/php/ch-2.php
@@ -0,0 +1,53 @@
+<?php
+# 0. take row
+# 1. delete row
+# 2. rotate matrix 90 degrees
+# 3. repeat again till no matrix
+
+# 1. transpose matrix 
+# 2. reflect horizontal axis 
+
+$a = array(
+  array(1,2,3),
+  array(4,5,6),
+  array(7,8,9)
+);
+
+$c = array(
+  array( 1,  2,  3,  4 ),
+  array(5,  6,  7,  8 ),
+  array(9, 10, 11, 12 ),
+  array(13, 14, 15, 16)
+);
+
+function rotate($a) {
+  # transpose array
+  $b = array();
+  if (isset($a[0]) && is_array($a[0])) {
+    $column_size = count($a[0]);
+    for($i = 0; $i < $column_size; $i++) {
+      $b[] = array_column($a, $i);
+    };
+    # then reflect horizontal axis
+    $b = array_reverse($b);
+      
+  }
+  return $b;
+}
+
+function solution($a) {
+  $b = array();  
+  $shift = true;
+  while ($shift) {
+    $b = array_merge($b, array_values($a[0]));
+    array_shift($a);
+    if (empty($a)) {
+      $shift = false;
+    }
+    $a = rotate($a);
+  }
+  return $b;
+}
+
+print_r(solution($a));
+print_r(solution($c));
-- 
cgit 


From ce8d37e7a80ba4b15907cd5db241d30707e795cf Mon Sep 17 00:00:00 2001
From: Henry Wong <somethingweird@yahoo.com>
Date: Wed, 25 Nov 2020 12:48:27 -0500
Subject: Update ch-2.php

where I learned to rotate matrix - http://techieme.in/matrix-rotation/
---
 challenge-088/henry-wong/php/ch-2.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/challenge-088/henry-wong/php/ch-2.php b/challenge-088/henry-wong/php/ch-2.php
index d5154c58f0..2e639bec68 100644
--- a/challenge-088/henry-wong/php/ch-2.php
+++ b/challenge-088/henry-wong/php/ch-2.php
@@ -1,9 +1,13 @@
 <?php
+
+# see http://techieme.in/matrix-rotation/
+
 # 0. take row
 # 1. delete row
 # 2. rotate matrix 90 degrees
 # 3. repeat again till no matrix
 
+# Rotate matrix
 # 1. transpose matrix 
 # 2. reflect horizontal axis 
 
-- 
cgit