ivan-demchenko/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
  <meta name="description" content="Merge Linked Lists">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
"use strict";

console.clear();

var Node = function Node(val, next) {
  return {
    val: val, next: next
  };
};

var list1 = Node(7, Node(8, Node(9)));
var list2 = Node(1, Node(2, Node(3, Node(4))));

var merge = function merge(l1, l2) {
  if (l1.val <= l2.val) {
    return Node(l1.val, l1.next ? merge(l1.next, l2) : l2);
  } else {
    return Node(l2.val, l2.next ? merge(l1, l2.next) : l1);
  }
};

var toArr = function toArr(list) {
  var acc = arguments.length <= 1 || arguments[1] === undefined ? [] : arguments[1];

  return acc.concat(list.val).concat(list.next ? toArr(list.next) : []);
};

console.log(toArr(merge(list1, list2)));
</script>


<script id="jsbin-source-javascript" type="text/javascript">console.clear();

const Node = (val, next) => ({
  val, next
});

const list1 = Node(7, Node(8, Node(9)));
const list2 = Node(1, Node(2, Node(3, Node(4))));

const merge = (l1, l2) => {
  if (l1.val <= l2.val) {
    return Node(l1.val, l1.next ? merge(l1.next, l2) : l2);
  } else {
    return Node(l2.val, l2.next ? merge(l1, l2.next) : l1);
  }
}

const toArr = (list, acc = []) => {
  return acc
    .concat(list.val)
    .concat(list.next ? toArr(list.next) : []);
}

console.log(
  toArr(merge(list1, list2))
);</script></body>
</html>

## jsbin.cilusoc.js
"use strict";

console.clear();

var Node = function Node(val, next) {
  return {
    val: val, next: next
  };
};

var list1 = Node(7, Node(8, Node(9)));
var list2 = Node(1, Node(2, Node(3, Node(4))));

var merge = function merge(l1, l2) {
  if (l1.val <= l2.val) {
    return Node(l1.val, l1.next ? merge(l1.next, l2) : l2);
  } else {
    return Node(l2.val, l2.next ? merge(l1, l2.next) : l1);
  }
};

var toArr = function toArr(list) {
  var acc = arguments.length <= 1 || arguments[1] === undefined ? [] : arguments[1];

  return acc.concat(list.val).concat(list.next ? toArr(list.next) : []);
};

console.log(toArr(merge(list1, list2)));
	<!DOCTYPE html>
	<html>
	<head>
	<meta name="description" content="Merge Linked Lists">
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>JS Bin</title>
	</head>
	<body>

	<script id="jsbin-javascript">
	"use strict";

	console.clear();

	var Node = function Node(val, next) {
	return {
	val: val, next: next
	};
	};

	var list1 = Node(7, Node(8, Node(9)));
	var list2 = Node(1, Node(2, Node(3, Node(4))));

	var merge = function merge(l1, l2) {
	if (l1.val <= l2.val) {
	return Node(l1.val, l1.next ? merge(l1.next, l2) : l2);
	} else {
	return Node(l2.val, l2.next ? merge(l1, l2.next) : l1);
	}
	};

	var toArr = function toArr(list) {
	var acc = arguments.length <= 1 \|\| arguments[1] === undefined ? [] : arguments[1];

	return acc.concat(list.val).concat(list.next ? toArr(list.next) : []);
	};

	console.log(toArr(merge(list1, list2)));
	</script>



	<script id="jsbin-source-javascript" type="text/javascript">console.clear();

	const Node = (val, next) => ({
	val, next
	});

	const list1 = Node(7, Node(8, Node(9)));
	const list2 = Node(1, Node(2, Node(3, Node(4))));

	const merge = (l1, l2) => {
	if (l1.val <= l2.val) {
	return Node(l1.val, l1.next ? merge(l1.next, l2) : l2);
	} else {
	return Node(l2.val, l2.next ? merge(l1, l2.next) : l1);
	}
	}

	const toArr = (list, acc = []) => {
	return acc
	.concat(list.val)
	.concat(list.next ? toArr(list.next) : []);
	}

	console.log(
	toArr(merge(list1, list2))
	);</script></body>
	</html>