updating DIRECTORY.md

Author: github-actions

DIRECTORY.md

@@ -54,6 +54,11 @@
   * [Palindrome](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/Palindrome.js)
   * [PascalTriangle](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/PascalTriangle.js)
 
+## maths
+  * [ReverseString](https://github.com/TheAlgorithms/Javascript/blob/master/maths/ReverseString.js)
+
+## [QuickSelect](https://github.com/TheAlgorithms/Javascript/blob/master//QuickSelect.js)
+
 ## Search
   * [BinarySearch](https://github.com/TheAlgorithms/Javascript/blob/master/Search/BinarySearch.js)
   * [JumpSearch](https://github.com/TheAlgorithms/Javascript/blob/master/Search/JumpSearch.js)
@@ -69,6 +74,7 @@
   * [CycleSort](https://github.com/TheAlgorithms/Javascript/blob/master/Sorts/CycleSort.js)
   * [FlashSort](https://github.com/TheAlgorithms/Javascript/blob/master/Sorts/FlashSort.js)
   * [GnomeSort](https://github.com/TheAlgorithms/Javascript/blob/master/Sorts/GnomeSort.js)
+  * [Heapsort](https://github.com/TheAlgorithms/Javascript/blob/master/Sorts/Heapsort.js)
   * [HeapSort](https://github.com/TheAlgorithms/Javascript/blob/master/Sorts/HeapSort.js)
   * [InsertionSort](https://github.com/TheAlgorithms/Javascript/blob/master/Sorts/InsertionSort.js)
   * [MergeSort](https://github.com/TheAlgorithms/Javascript/blob/master/Sorts/MergeSort.js)