From 0b57b895439bb6c7539851f5ef42c2b2195bedf8 Mon Sep 17 00:00:00 2001
From: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Date: Sat, 27 Jun 2020 00:37:39 +0000
Subject: [PATCH] updating DIRECTORY.md

---
 DIRECTORY.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/DIRECTORY.md b/DIRECTORY.md
index 679e6f7d8..a3c66cd96 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -10,6 +10,9 @@
   * [Rat Maze](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/backtracking/rat_maze.cpp)
   * [Sudoku Solve](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/backtracking/sudoku_solve.cpp)
 
+## Ciphers
+  * [Hill Cipher](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/ciphers/hill_cipher.cpp)
+
 ## Data Structures
   * [Avltree](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/data_structures/avltree.cpp)
   * [Binary Search Tree](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/data_structures/binary_search_tree.cpp)