Added template for all the demos I have to complete still

buckyroberts · buckyroberts · commit 8db90b92e5cc · 2016-07-09T04:23:22.000-04:00
diff --git a/Data_Structures/Dictionaries/main.js b/Data_Structures/Dictionaries/main.js
@@ -30,12 +30,16 @@ function Dictionary() {
         return items;
     };
 
-    this.size = function () {};
+    // to return the size of the array, you calculate the size of all the keys
+    this.size = function () {
+        return Object.keys(items).length;
+    };
 
     this.keys = function () {
         return Object.keys(items);
     };
 
+    // to return an array of values only, iterate through all items and access values via the keys
     this.values = function () {
         var values = [];
         for(var k in items){
@@ -53,7 +57,6 @@ var dict = new Dictionary();
 dict.set('Bucky', 'bucky@hotmail.com');
 dict.set('Sally', 'sally@gmail.com');
 dict.set('Tuna', 'tuna@aol.com');
-
 console.log(dict.keys());
 console.log(dict.values());
 console.log(dict.get('Bucky'));
@@ -67,3 +70,4 @@ console.log(dict.values());
 console.log('----------');
 
 console.log(dict.getItems());
+console.log(dict.size());
diff --git a/Data_Structures/Graphs/README.md b/Data_Structures/Graphs/README.md
@@ -0,0 +1,3 @@
+# Graphs
+
+Description
diff --git a/Data_Structures/Graphs/main.js b/Data_Structures/Graphs/main.js
@@ -0,0 +1,3 @@
+"use strict";
+
+
diff --git a/Data_Structures/Sets/README.md b/Data_Structures/Sets/README.md
@@ -1,3 +1,3 @@
 # Sets
 
-Description
+Sets are iterable objects that do not allow for duplicate values.
diff --git a/Data_Structures/Trees/README.md b/Data_Structures/Trees/README.md
@@ -0,0 +1,3 @@
+# Trees
+
+Description
diff --git a/Data_Structures/Trees/main.js b/Data_Structures/Trees/main.js
@@ -0,0 +1,3 @@
+"use strict";
+
+

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,3 @@`
`1`	`1`	`# Sets`
`2`	`2`
`3`		`-Description`
	`3`	`+Sets are iterable objects that do not allow for duplicate values.`