diff --git a/.github/workflows/awesome_workflow.yml b/.github/workflows/awesome_workflow.yml
index cf6212b30c..50a15fc5cd 100644
--- a/.github/workflows/awesome_workflow.yml
+++ b/.github/workflows/awesome_workflow.yml
@@ -29,7 +29,7 @@ jobs:
       - name: Update DIRECTORY.md
         run: |
           wget https://raw.githubusercontent.com/TheAlgorithms/scripts/main/build_directory_md.py
-          python3 build_directory_md.py C . .c,.h > DIRECTORY.md
+          python3 build_directory_md.py C . .c,.h leetcode/ > DIRECTORY.md
           git commit -m "updating DIRECTORY.md" DIRECTORY.md || true
       - name: Get file changes
         run: |
diff --git a/.github/workflows/leetcode_directory_writer.yml b/.github/workflows/leetcode_directory_writer.yml
index 16cb656b98..d2657333e6 100644
--- a/.github/workflows/leetcode_directory_writer.yml
+++ b/.github/workflows/leetcode_directory_writer.yml
@@ -18,13 +18,22 @@ jobs:
       - name: Add python dependencies
         run: |
           pip install requests
-      - name: Write leectode DIRECTORY.md
+      - name: Write LeetCode DIRECTORY.md
         run: |
           python3 scripts/leetcode_directory_md.py 2>&1 | tee leetcode/DIRECTORY.md
-          git config --global user.name github-actions[bot]
-          git config --global user.email 'github-actions@users.noreply.github.com'
-      - name: Update LeetCode's directory
+          git pull || true
+      - name: Commit and push changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        id: commit-push
+        with:
+          commit_message: "docs: updating `leetcode/DIRECTORY.md`"
+          branch: "leetcode-directory-${{ github.sha }}"
+          create_branch: true
+      - name: Creating and merging the PR
+        shell: bash
+        if: steps.commit-push.outputs.changes_detected == 'true'
         run: |
-          git add leetcode/DIRECTORY.md
-          git commit -am "updating DIRECTORY.md" ||  true
-          git push origin HEAD:$GITHUB_REF || true
+          gh pr create --base ${GITHUB_REF##*/} --head leetcode-directory-${{ github.sha }} --title 'docs: updating `leetcode/DIRECTORY.md`' --body 'Updated LeetCode directory (see the diff. for changes).'
+          gh pr merge --admin --merge --subject 'docs: updating `leetcode/DIRECTORY.md' --delete-branch
+        env:
+          GH_TOKEN: ${{ github.token }}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 80a80b0f39..eb925dc92a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,6 +64,7 @@ add_subdirectory(machine_learning)
 add_subdirectory(process_scheduling_algorithms)
 add_subdirectory(numerical_methods)
 add_subdirectory(math)
+add_subdirectory(cipher)
 
 ## Configure Doxygen documentation system
 cmake_policy(SET CMP0054 NEW)
diff --git a/DIRECTORY.md b/DIRECTORY.md
index 9a51282a02..1e49c05293 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -2,6 +2,9 @@
 ## Audio
   * [Alaw](https://github.com/TheAlgorithms/C/blob/HEAD/audio/alaw.c)
 
+## Cipher
+  * [Rot13](https://github.com/TheAlgorithms/C/blob/HEAD/cipher/rot13.c)
+
 ## Client Server
   * [Client](https://github.com/TheAlgorithms/C/blob/HEAD/client_server/client.c)
   * [Remote Command Exec Udp Client](https://github.com/TheAlgorithms/C/blob/HEAD/client_server/remote_command_exec_udp_client.c)
@@ -167,158 +170,6 @@
   * [Hash Sdbm](https://github.com/TheAlgorithms/C/blob/HEAD/hash/hash_sdbm.c)
   * [Hash Xor8](https://github.com/TheAlgorithms/C/blob/HEAD/hash/hash_xor8.c)
 
-## Leetcode
-  * Src
-    * [1](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1.c)
-    * [10](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/10.c)
-    * [1008](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1008.c)
-    * [1009](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1009.c)
-    * [101](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/101.c)
-    * [1019](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1019.c)
-    * [1026](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1026.c)
-    * [104](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/104.c)
-    * [108](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/108.c)
-    * [1089](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1089.c)
-    * [109](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/109.c)
-    * [11](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/11.c)
-    * [110](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/110.c)
-    * [112](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/112.c)
-    * [1137](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1137.c)
-    * [1147](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1147.c)
-    * [118](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/118.c)
-    * [1184](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1184.c)
-    * [1189](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1189.c)
-    * [119](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/119.c)
-    * [12](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/12.c)
-    * [1207](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1207.c)
-    * [121](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/121.c)
-    * [124](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/124.c)
-    * [125](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/125.c)
-    * [1283](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1283.c)
-    * [13](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/13.c)
-    * [136](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/136.c)
-    * [14](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/14.c)
-    * [141](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/141.c)
-    * [142](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/142.c)
-    * [1524](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1524.c)
-    * [153](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/153.c)
-    * [16](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/16.c)
-    * [160](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/160.c)
-    * [1653](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1653.c)
-    * [1657](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1657.c)
-    * [169](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/169.c)
-    * [1695](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1695.c)
-    * [17](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/17.c)
-    * [1704](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1704.c)
-    * [173](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/173.c)
-    * [1752](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1752.c)
-    * [1769](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1769.c)
-    * [1833](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1833.c)
-    * [1838](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/1838.c)
-    * [189](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/189.c)
-    * [19](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/19.c)
-    * [190](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/190.c)
-    * [191](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/191.c)
-    * [2](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2.c)
-    * [20](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/20.c)
-    * [201](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/201.c)
-    * [2024](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2024.c)
-    * [203](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/203.c)
-    * [206](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/206.c)
-    * [2095](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2095.c)
-    * [21](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/21.c)
-    * [2125](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2125.c)
-    * [2130](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2130.c)
-    * [215](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/215.c)
-    * [217](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/217.c)
-    * [2222](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2222.c)
-    * [223](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/223.c)
-    * [2256](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2256.c)
-    * [226](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/226.c)
-    * [2270](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2270.c)
-    * [2279](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2279.c)
-    * [230](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/230.c)
-    * [2304](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2304.c)
-    * [231](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/231.c)
-    * [234](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/234.c)
-    * [236](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/236.c)
-    * [24](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/24.c)
-    * [242](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/242.c)
-    * [2482](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2482.c)
-    * [2501](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/2501.c)
-    * [26](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/26.c)
-    * [268](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/268.c)
-    * [27](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/27.c)
-    * [274](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/274.c)
-    * [278](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/278.c)
-    * [28](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/28.c)
-    * [283](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/283.c)
-    * [287](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/287.c)
-    * [29](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/29.c)
-    * [3](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/3.c)
-    * [32](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/32.c)
-    * [344](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/344.c)
-    * [35](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/35.c)
-    * [367](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/367.c)
-    * [37](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/37.c)
-    * [38](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/38.c)
-    * [387](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/387.c)
-    * [389](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/389.c)
-    * [4](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/4.c)
-    * [404](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/404.c)
-    * [42](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/42.c)
-    * [442](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/442.c)
-    * [45](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/45.c)
-    * [461](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/461.c)
-    * [476](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/476.c)
-    * [485](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/485.c)
-    * [5](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/5.c)
-    * [50](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/50.c)
-    * [509](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/509.c)
-    * [520](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/520.c)
-    * [53](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/53.c)
-    * [540](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/540.c)
-    * [561](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/561.c)
-    * [567](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/567.c)
-    * [6](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/6.c)
-    * [617](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/617.c)
-    * [62](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/62.c)
-    * [63](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/63.c)
-    * [647](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/647.c)
-    * [66](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/66.c)
-    * [669](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/669.c)
-    * [674](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/674.c)
-    * [684](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/684.c)
-    * [7](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/7.c)
-    * [700](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/700.c)
-    * [701](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/701.c)
-    * [704](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/704.c)
-    * [709](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/709.c)
-    * [75](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/75.c)
-    * [771](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/771.c)
-    * [79](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/79.c)
-    * [8](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/8.c)
-    * [807](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/807.c)
-    * [82](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/82.c)
-    * [83](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/83.c)
-    * [841](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/841.c)
-    * [852](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/852.c)
-    * [876](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/876.c)
-    * [9](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/9.c)
-    * [901](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/901.c)
-    * [905](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/905.c)
-    * [917](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/917.c)
-    * [931](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/931.c)
-    * [938](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/938.c)
-    * [94](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/94.c)
-    * [953](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/953.c)
-    * [965](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/965.c)
-    * [977](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/977.c)
-    * [979](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/979.c)
-    * [98](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/98.c)
-    * [985](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/985.c)
-    * [997](https://github.com/TheAlgorithms/C/blob/HEAD/leetcode/src/997.c)
-
 ## Machine Learning
   * [Adaline Learning](https://github.com/TheAlgorithms/C/blob/HEAD/machine_learning/adaline_learning.c)
   * [K Means Clustering](https://github.com/TheAlgorithms/C/blob/HEAD/machine_learning/k_means_clustering.c)
@@ -359,7 +210,6 @@
   * [Poly Add](https://github.com/TheAlgorithms/C/blob/HEAD/misc/poly_add.c)
   * [Postfix Evaluation](https://github.com/TheAlgorithms/C/blob/HEAD/misc/postfix_evaluation.c)
   * [Quartile](https://github.com/TheAlgorithms/C/blob/HEAD/misc/quartile.c)
-  * [Rot13](https://github.com/TheAlgorithms/C/blob/HEAD/misc/rot13.c)
   * [Rselect](https://github.com/TheAlgorithms/C/blob/HEAD/misc/rselect.c)
   * [Run Length Encoding](https://github.com/TheAlgorithms/C/blob/HEAD/misc/run_length_encoding.c)
   * [Shunting Yard](https://github.com/TheAlgorithms/C/blob/HEAD/misc/shunting_yard.c)
diff --git a/LICENSE b/LICENSE
index ecc818272d..1e132df443 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (C) 2016-2022 TheAlgorithms and contributors
+Copyright (C) 2016-2023 TheAlgorithms and contributors
 
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
diff --git a/cipher/CMakeLists.txt b/cipher/CMakeLists.txt
new file mode 100644
index 0000000000..c1d93bbc91
--- /dev/null
+++ b/cipher/CMakeLists.txt
@@ -0,0 +1,18 @@
+# If necessary, use the RELATIVE flag, otherwise each source file may be listed
+# with full pathname. The RELATIVE flag makes it easier to extract an executable's name
+# automatically.
+
+file( GLOB APP_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.c )
+foreach( testsourcefile ${APP_SOURCES} )
+    string( REPLACE ".c" "" testname ${testsourcefile} ) # File type. Example: `.c`
+    add_executable( ${testname} ${testsourcefile} )
+
+    if(OpenMP_C_FOUND)
+        target_link_libraries(${testname} OpenMP::OpenMP_C)
+    endif()
+    if(MATH_LIBRARY)
+        target_link_libraries(${testname} ${MATH_LIBRARY})
+    endif()
+    install(TARGETS ${testname} DESTINATION "bin/cipher") # Folder name. Do NOT include `<>`
+
+endforeach( testsourcefile ${APP_SOURCES} )
diff --git a/misc/rot13.c b/cipher/rot13.c
similarity index 100%
rename from misc/rot13.c
rename to cipher/rot13.c