Add solution #1313

Author: JoshCrozier

solutions/1313-decompress-run-length-encoded-list.js

@@ -0,0 +1,23 @@
+/**
+ * 1313. Decompress Run-Length Encoded List
+ * https://leetcode.com/problems/decompress-run-length-encoded-list/
+ * Difficulty: Easy
+ *
+ * We are given a list nums of integers representing a list compressed with run-length encoding.
+ *
+ * Consider each adjacent pair of elements [a, b] = [nums[2*i], nums[2*i+1]] (with i >= 0).
+ * For each such pair, there are a elements with value b in the decompressed list.
+ *
+ * Return the decompressed list.
+ */
+
+/**
+ * @param {number[]} nums
+ * @return {number[]}
+ */
+var decompressRLElist = function(nums, result = []) {
+  for (let i = 0; i < nums.length; i += 2) {
+    result.push(...new Array(nums[i]).fill(nums[i + 1]));
+  }
+  return result;
+};