Add solution #2627

Author: JoshCrozier

README.md

@@ -369,6 +369,7 @@
 2621|[Sleep](./2621-sleep.js)|Easy|
 2622|[Cache With Time Limit](./2622-cache-with-time-limit.js)|Medium|
 2623|[Memoize](./2623-memoize.js)|Medium|
+2627|[Debounce](./2627-debounce.js)|Medium|
 2629|[Function Composition](./2629-function-composition.js)|Easy|
 2630|[Memoize II](./2630-memoize-ii.js)|Hard|
 3392|[Count Subarrays of Length Three With a Condition](./3392-count-subarrays-of-length-three-with-a-condition.js)|Easy|

solutions/2627-debounce.js

@@ -0,0 +1,32 @@
+/**
+ * 2627. Debounce
+ * https://leetcode.com/problems/debounce/
+ * Difficulty: Medium
+ *
+ * Given a function fn and a time in milliseconds t, return a debounced version of that function.
+ *
+ * A debounced function is a function whose execution is delayed by t milliseconds and whose
+ * execution is cancelled if it is called again within that window of time. The debounced
+ * function should also receive the passed parameters.
+ *
+ * For example, let's say t = 50ms, and the function was called at 30ms, 60ms, and 100ms.
+ *
+ * The first 2 function calls would be cancelled, and the 3rd function call would be executed
+ * at 150ms.
+ *
+ * If instead t = 35ms, The 1st call would be cancelled, the 2nd would be executed at 95ms,
+ * and the 3rd would be executed at 135ms.
+ */
+
+/**
+ * @param {Function} fn
+ * @param {number} t milliseconds
+ * @return {Function}
+ */
+var debounce = function(fn, t) {
+  let timer;
+  return (...args) => {
+    clearTimeout(timer);
+    timer = setTimeout(() => fn(...args), t);
+  };
+};