From a9a5123d48bcbe82f2241fe1d6903645c801ccc4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?H=C3=A9ctor=20Olvera=20Vital?=
 <hector.olvera@ciencias.unam.mx>
Date: Sat, 9 May 2020 17:46:35 -0500
Subject: [PATCH] [Add] I change the constructor of Deque, now it accept a
 iterable. Challege solved

---
 src/challenge.js | 22 +++++++++++++++++++---
 src/deque.js     | 12 +++++++++++-
 2 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/src/challenge.js b/src/challenge.js
index f91816b..fbd36d3 100644
--- a/src/challenge.js
+++ b/src/challenge.js
@@ -1,10 +1,26 @@
-const { Deque } = require ('./deque.js');
+const { Deque } = require('./deque.js');
 
+/**
+ * 
+ * @param {string} text 
+ * @returns {boolean}
+ */
 function palindromeChecker(text) {
+  if (!text) return false;
+  
+  const dequeText = new Deque(
+    text.replace(/ /g, '').toLowerCase()
+  );
 
-  // your code
+  while (!dequeText.isEmpty()) {
+    if (dequeText.peekBack() !== dequeText.peekFront()) {
+      return false;
+    }
+    dequeText.removeBack();
+    dequeText.removeFront();
+  }
 
-  return;
+  return true;
 }
 
 module.exports = { palindromeChecker };
\ No newline at end of file
diff --git a/src/deque.js b/src/deque.js
index 7bcd585..f40471a 100644
--- a/src/deque.js
+++ b/src/deque.js
@@ -1,9 +1,19 @@
 class Deque {
 
-  constructor() {
+  constructor(iterable=undefined) {
     this.count = 0;
     this.topCount = 0;
     this.items = {};
+    
+    if (iterable) {
+      const iterator = iterable[Symbol.iterator]();
+      let element = iterator.next();
+      while(!element.done) {
+        this.addBack(element.value);
+        element = iterator.next();
+      }
+      
+    }
   }
 
   addFront(element) {