From fe098858c2112a5007bdfc2134a25751ef4e74fe Mon Sep 17 00:00:00 2001
From: quinqu <quinruby0@gmail.com>
Date: Thu, 26 Mar 2020 12:28:31 -0700
Subject: [PATCH 1/2] initial commit

---
 lib/array_intersection.rb           | 14 ++++++++++++--
 lib/palindrome_permutation.rb       | 24 ++++++++++++++++++++++--
 lib/permutations.rb                 | 21 +++++++++++++++++++--
 test/palindrome_permutation_test.rb |  2 +-
 test/permutations_test.rb           |  2 +-
 5 files changed, 55 insertions(+), 8 deletions(-)

diff --git a/lib/array_intersection.rb b/lib/array_intersection.rb
index ac8771f..3f9faf6 100644
--- a/lib/array_intersection.rb
+++ b/lib/array_intersection.rb
@@ -1,3 +1,13 @@
 def intersection(list1, list2)
-  raise NotImplementedError, "Intersection not implemented"
-end
\ No newline at end of file
+  hash = {}
+  array = []
+  list1.each do |num|
+    hash[num] = true
+    list2.each do |num2|
+      if hash[num2] 
+        array << num2
+      end 
+    end
+  end 
+  return array.uniq 
+end
diff --git a/lib/palindrome_permutation.rb b/lib/palindrome_permutation.rb
index f113692..230d31b 100644
--- a/lib/palindrome_permutation.rb
+++ b/lib/palindrome_permutation.rb
@@ -1,4 +1,24 @@
 
 def palindrome_permutation?(string)
-  raise NotImplementedError, "palindrome_permutation? not implemented"
-end
\ No newline at end of file
+  hash = {}
+  count = 0
+  string_array = string.split("")
+  string_array.each do |char|
+    hash[char] = 0  
+  end
+  string_array.each do |char|
+    if hash[char]
+      hash[char] += 1
+    end 
+    if hash[char] % 2 == 0
+      count += 1 
+    end 
+  end
+
+  if string.length % 2 == 0
+    return count == string_array.length/2
+  elsif string.length % 2 > 0 
+    return count == (string_array.length-1)/2
+  end
+  return false  
+end 
diff --git a/lib/permutations.rb b/lib/permutations.rb
index 3b08381..cb833de 100644
--- a/lib/permutations.rb
+++ b/lib/permutations.rb
@@ -1,4 +1,21 @@
 
 def permutations?(string1, string2)
-  raise NotImplementedError, "permutations? not implemented"
-end
\ No newline at end of file
+  hash = {}
+  if string1.length != string2.length 
+    return false
+  end 
+  count = 0
+  string1 = string1.split("")
+  string2 = string2.split("")
+  hash = {}
+  string1.each do |char|
+    hash[char] = true 
+  end 
+  string2.each do |char2|
+    if !hash[char2]
+      return false
+    end 
+  end
+  return true
+end 
+
diff --git a/test/palindrome_permutation_test.rb b/test/palindrome_permutation_test.rb
index e9119de..984b333 100644
--- a/test/palindrome_permutation_test.rb
+++ b/test/palindrome_permutation_test.rb
@@ -1,6 +1,6 @@
 require_relative "test_helper"
 
-xdescribe "palindrome_permutation?" do
+describe "palindrome_permutation?" do
   it "will work for hello" do
     expect(palindrome_permutation?("hello")).must_equal false
   end
diff --git a/test/permutations_test.rb b/test/permutations_test.rb
index 79da2f6..5f6ae77 100644
--- a/test/permutations_test.rb
+++ b/test/permutations_test.rb
@@ -1,6 +1,6 @@
 require_relative "test_helper"
 
-xdescribe "permutations?" do
+describe "permutations?" do
   it "returns true for empty string" do
     expect(permutations?("", "")).must_equal true
   end

From 24fc218df6a095702d5e77d92b96eedc2cdde869 Mon Sep 17 00:00:00 2001
From: quinqu <quinruby0@gmail.com>
Date: Sun, 29 Mar 2020 19:30:14 -0700
Subject: [PATCH 2/2] removed unnecessary code

---
 lib/palindrome_permutation.rb | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/lib/palindrome_permutation.rb b/lib/palindrome_permutation.rb
index 230d31b..22b154b 100644
--- a/lib/palindrome_permutation.rb
+++ b/lib/palindrome_permutation.rb
@@ -14,11 +14,5 @@ def palindrome_permutation?(string)
       count += 1 
     end 
   end
-
-  if string.length % 2 == 0
     return count == string_array.length/2
-  elsif string.length % 2 > 0 
-    return count == (string_array.length-1)/2
-  end
-  return false  
 end