reduce examaple 3, fix: #13

Author: theriyazo

All Lessons/reduceExample3.js

@@ -0,0 +1,23 @@
+// find the how many people are of 26, 76, 35. 23 age
+const users = [
+    { firstName: "Riyaz", lastName: "Ahamad", age: 23},
+    { firstName: "Donald", lastName: "Trump", age: 76},
+    { firstName: "Cristiano", lastName: "Ronaldo", age: 35},
+    { firstName: "Albert", lastName: "Einstein", age: 23},
+];
+
+const output = users.reduce(function (acc, curr){
+
+    if(acc[curr.age]){
+        acc[curr.age] = ++acc[curr.age]
+    }
+    else {
+        acc[curr.age] = 1
+    }
+    return acc;
+}, {});
+
+console.log(output);
+
+// OUTPUT
+// {23: 2, 35: 1, 76: 1}

index.html

@@ -23,7 +23,8 @@ <h1>Hello JavaScript</h1>
     <!-- <script src="/All Lessons/filter.js"></script> -->
     <!-- <script src="/All Lessons/filterExample3.js"></script> -->
     <!-- <script src="/All Lessons/reduceExample1.js"></script> -->
-    <script src="/All Lessons/reduceExample2.js"></script>
+    <!-- <script src="/All Lessons/reduceExample2.js"></script> -->
+    <script src="/All Lessons/reduceExample3.js"></script>
 
 
 </body>