diff --git a/curriculum/challenges/english/08-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md b/curriculum/challenges/english/08-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md
index 483c7ed822..92caa079bb 100644
--- a/curriculum/challenges/english/08-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md
+++ b/curriculum/challenges/english/08-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md
@@ -15,8 +15,7 @@ Just like our remove(element)
method, which removeAt method should remove and return the element at specified index, and reduce the length of the linked list.
+ testString: assert((function(){var test = new LinkedList(); test.add('cat'); var removedItem = test.removeAt(0); return test.head() === null && test.size() === 0 && removedItem === 'cat';}()));
+ - text: Your removeAt
method should return the element of the removed node.
+ testString: assert((function(){var test = new LinkedList(); test.add('cat'); test.add('dog'); test.add('kitten'); return test.removeAt(1) === 'dog'}()));
+ - text: Your removeAt
method should return null
and the linked list should not change if the given index is less than 0
.
+ testString: assert((function(){var test = new LinkedList(); test.add('cat'); test.add('dog'); test.add('kitten'); var removedItem = test.removeAt(-1); return removedItem === null && JSON.stringify(test.head()) === '{"element":"cat","next":{"element":"dog","next":{"element":"kitten","next":null}}}'}()));
+ - text: Your removeAt
method should return null
and the linked list should not change if the given index is greater than or equal to the length
of the list.
+ testString: assert((function(){var test = new LinkedList(); test.add('cat'); test.add('dog'); test.add('kitten'); var removedItem = test.removeAt(3); return removedItem === null && JSON.stringify(test.head()) === '{"element":"cat","next":{"element":"dog","next":{"element":"kitten","next":null}}}'}()));
```
@@ -85,14 +88,13 @@ function LinkedList() {
```
+
## Solution
```js
-
-
function LinkedList() {
var length = 0;
var head = null;
@@ -137,8 +139,6 @@ function LinkedList() {
if (index === 0) {
var removed = head.element;
head = currentNode.next;
- length--;
- return removed;
} else {
while (count < index) {
previous = currentNode;
@@ -147,12 +147,11 @@ function LinkedList() {
}
var removed = previous.next.element;
previous.next = currentNode.next;
- length--;
- return removed;
}
+ length--;
+ return removed;
};
}
-
-
```
+