Add solution #1619

Author: JoshCrozier

README.md

@@ -1,4 +1,4 @@
-# 1,424 LeetCode solutions in JavaScript
+# 1,425 LeetCode solutions in JavaScript
 
 [https://leetcodejavascript.com](https://leetcodejavascript.com)
 
@@ -1248,6 +1248,7 @@
 1615|[Maximal Network Rank](./solutions/1615-maximal-network-rank.js)|Medium|
 1616|[Split Two Strings to Make Palindrome](./solutions/1616-split-two-strings-to-make-palindrome.js)|Medium|
 1617|[Count Subtrees With Max Distance Between Cities](./solutions/1617-count-subtrees-with-max-distance-between-cities.js)|Hard|
+1619|[Mean of Array After Removing Some Elements](./solutions/1619-mean-of-array-after-removing-some-elements.js)|Easy|
 1657|[Determine if Two Strings Are Close](./solutions/1657-determine-if-two-strings-are-close.js)|Medium|
 1668|[Maximum Repeating Substring](./solutions/1668-maximum-repeating-substring.js)|Easy|
 1669|[Merge In Between Linked Lists](./solutions/1669-merge-in-between-linked-lists.js)|Medium|

solutions/1619-mean-of-array-after-removing-some-elements.js

@@ -0,0 +1,23 @@
+/**
+ * 1619. Mean of Array After Removing Some Elements
+ * https://leetcode.com/problems/mean-of-array-after-removing-some-elements/
+ * Difficulty: Easy
+ *
+ * Given an integer array arr, return the mean of the remaining integers after removing the
+ * smallest 5% and the largest 5% of the elements.
+ *
+ * Answers within 10-5 of the actual answer will be considered accepted.
+ */
+
+/**
+ * @param {number[]} arr
+ * @return {number}
+ */
+var trimMean = function(numbers) {
+  const sortedNumbers = numbers.sort((a, b) => a - b);
+  const trimSize = numbers.length * 0.05;
+  const trimmedNumbers = sortedNumbers.slice(trimSize, -trimSize);
+  const sum = trimmedNumbers.reduce((acc, num) => acc + num, 0);
+
+  return sum / trimmedNumbers.length;
+};