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Minimalistic implementation of a linked list, used to compare the performance of population and iteration a linked list implementation and a standard Array.
<script>
Node = function(data) {
this.data = data;
this.next = null;
};
LinkedList = function() {
this.head = null;
this.tail = null;
};
LinkedList.prototype.add = function(data) {
node = new Node(data);
if (this.head == null) {
this.head = node;
}
if (this.tail != null) {
this.tail.next = node;
}
this.tail = node;
}
LinkedList.prototype.each = function(fn) {
iterate = function(node) {
fn(node.data);
if (node.next) {
return iterate(node.next);
}
};
if (this.head) {
return iterate(this.head);
}
}
function populateArray(amount) {
ar = new Array();
for (i = 0; i < amount; i++) {
ar[i] = "hello " + i;
}
return ar;
}
function populateLinkedList(amount) {
ll = new LinkedList();
for (i = 0; i < amount; i++) {
ll.add("hello " + i);
}
return ll;
}
function doSomething(value) {
return value + "string concatination";
}
function iterateArray(array) {
for (value in array) {
doSomething(value);
}
}
function iterateLinkedList(list) {
list.each(doSomething);
}
array1 = populateArray(1);
array100 = populateArray(100);
ll1 = populateLinkedList(1);
ll100 = populateLinkedList(100);
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
array insertion x 25 |
| ready |
linked list insertion x 25 |
| ready |
array insertion x 100 |
| ready |
linked list insertion x 100 |
| ready |
iterate array 1 |
| ready |
iterate linked list 1 |
| ready |
iterate array 100 |
| ready |
iterate linked list 100 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.