From 43212147936048a7c024506fc5d1cf4ce8c0efe6 Mon Sep 17 00:00:00 2001
From: Lisa Durdun <lisa.durdun@gmail.com>
Date: Wed, 25 Oct 2023 23:11:13 +0200
Subject: [PATCH] Iteration 1 and 2 without visualization

---
 src/queue/queue-data-structure.js | 25 ++++++++++++++++++++-----
 src/stack/stack-data-structure.js | 26 +++++++++++++++++++-------
 2 files changed, 39 insertions(+), 12 deletions(-)

diff --git a/src/queue/queue-data-structure.js b/src/queue/queue-data-structure.js
index 98ac0fd0..cddebb3f 100644
--- a/src/queue/queue-data-structure.js
+++ b/src/queue/queue-data-structure.js
@@ -5,23 +5,38 @@ class Queue {
   }
 
   canEnqueue() {
-    // ... your code goes here
+    if (this.queueControl.length < this.MAX_SIZE) {
+      return true;
+    } else {
+      return false;
+    }
   }
 
   isEmpty() {
-    // ... your code goes here
+    if (this.queueControl.length === 0) {
+      return true;
+    } else {
+      return false;
+    }
   }
 
   enqueue(item) {
-    // ... your code goes here
+    if (this.canEnqueue() === true) {
+      this.queueControl.push(item);
+      return this.queueControl;
+    } else { throw new Error("QUEUE_OVERFLOW");
+    }
   }
 
   dequeue() {
-    // ... your code goes here
+    if (this.isEmpty() === false) {
+      return this.queueControl.shift();
+    } else { throw new Error("QUEUE_UNDERFLOW");
+  }
   }
 
   display() {
-    // ... your code goes here
+    return this.queueControl;
   }  
 }
 
diff --git a/src/stack/stack-data-structure.js b/src/stack/stack-data-structure.js
index 1106f6f3..ef0bf566 100644
--- a/src/stack/stack-data-structure.js
+++ b/src/stack/stack-data-structure.js
@@ -5,25 +5,37 @@ class Stack {
   }
 
   canPush() {
-    // ... your code goes here
+    if (this.stackControl.length < this.MAX_SIZE) {
+      return true;
+    } else return false;
   }
 
   isEmpty() {
-    // ... your code goes here
+    if (this.stackControl.length === 0) {
+      return true;
+    } else return false;
   }
 
   push(item) {
-    // ... your code goes here
+    if (this.canPush() === true) {
+      this.stackControl.push(item);
+      return this.stackControl;
+    } else { throw new Error("STACK_OVERFLOW");
+    }
   }
 
   pop() {
-    // ... your code goes here
+    if (this.isEmpty() === false) {
+      return this.stackControl.pop();
+    } else {
+      throw new Error("STACK_UNDERFLOW");
+    }
   }
 
   display() {
-    // ... your code goes here
-  }  
+    return this.stackControl;
+  }
 }
 
 // This is required to enable the automated tests, please ignore it.
-if (typeof module !== 'undefined') module.exports = Stack;
+if (typeof module !== "undefined") module.exports = Stack;