Completed Basic JavaScript Exercises

lib/1_is_greater_than_five.js

@@ -6,6 +6,6 @@
 
 module.exports = {
   is_greater_than_five: function(num){
-    // Your code goes here.
+    return num > 5;
   }
 }

lib/2_uppercases_all_letters.js

@@ -6,6 +6,6 @@
 
 module.exports = {
   uppercases_all_letters: function(str){
-    // Your code goes here.
+    return str.toUpperCase();
   }
 }

lib/3_add_up_numbers.js

@@ -6,6 +6,10 @@
 
 module.exports = {
   add_up_numbers: function(arr){
-    // Your code goes here.
+    var sum = 0;
+    for (var num in arr){
+      sum += arr[num];
+    }
+    return sum;
   }
 }

lib/4_filter_numbers.js

@@ -6,6 +6,11 @@
 
 module.exports = {
   filter_numbers: function(arr){
-    // Your code goes here.
+    for (var i = arr.length - 1; i >= 0; i--) {
+      if (arr[i] > 9){
+        arr.splice(i, 1);
+      }
+    }
+    return arr;
   }
 }