From e3a712b79e0bbad4f903825c3f012b33b03c1934 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mat=C4=9Bj=20Chalk?= <matej.chalk@flowup.cz>
Date: Mon, 17 Jun 2024 14:29:09 +0200
Subject: [PATCH 1/2] feat: implement new median function

---
 src/index.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/index.js b/src/index.js
index d2f047e..b65c30f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -15,6 +15,18 @@ export function sum(values) {
 export function average(values) {
   return sum(values) / values.length;
 }
+/**
+ * Calculated median average of all numbers in array.
+ * @param {number[]} values Numbers to average.
+ * @returns {number} Median of all numbers.
+ */
+export function median(values) {
+  const sorted = sort(values, 'asc');
+  if (sorted.length % 2 === 0) {
+    return average([sorted[sorted.length / 2 - 1], sorted[sorted.length / 2]]);
+  }
+  return sorted[Math.floor(sorted.length / 2)];
+}
 
 /**
  * Sort array by numeric values.

From 3d79a7f9917e01ee230d8f8956b4bcd8c0e4bf2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mat=C4=9Bj=20Chalk?= <matej.chalk@flowup.cz>
Date: Mon, 17 Jun 2024 14:29:29 +0200
Subject: [PATCH 2/2] test: unit test new median function

---
 test/index.test.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/test/index.test.js b/test/index.test.js
index 3eea261..33cc280 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -1,6 +1,6 @@
 import assert from 'node:assert';
 import { describe, it } from 'node:test';
-import { average, sort, sum } from '../src/index.js';
+import { average, median, sort, sum } from '../src/index.js';
 
 describe('sum', () => {
   it('should sum all numbers', () => {
@@ -18,6 +18,16 @@ describe('average', () => {
   });
 });
 
+describe('median', () => {
+  it('should calculate median for odd-length array', () => {
+    assert.strictEqual(median([3, 1, 2]), 2);
+  });
+
+  it('should calculate median for even-length array', () => {
+    assert.strictEqual(median([3, 4, 1, 2]), 2.5);
+  });
+});
+
 describe('sort', () => {
   it('should sort numbers in ascending order by default', () => {
     assert.deepEqual(sort([4, 2, 1, 3]), [1, 2, 3, 4]);