chore: refresh Hacktoberfest 2026 prep tracker (#15476)

* chore: refresh Hacktoberfest 2026 prep tracker

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* updating DIRECTORY.md

---------

Co-authored-by: cclauss <cclauss@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

DIRECTORY.md

@@ -1479,7 +1479,6 @@
     * [Sol1](project_euler/problem_800/sol1.py)
 
 ## [Quantum](quantum)
-  * [Q Fourier Transform](quantum/q_fourier_transform.py)
   * [Shor Algorithm](quantum/shor_algorithm.py)
 
 ## [Scheduling](scheduling)

ciphers/des_ecb.py

@@ -537,21 +537,22 @@ def decrypt(key: str, cipher_text: str) -> str:
         if mode not in ["e", "d", "k", "q"]:
             print("Invalid option. Please try again.")
             continue
-        if mode == "q":
-            break
-        elif mode == "k":
-            print(f"Generated key: {Des.generate_key()}")
-        elif mode == "e":
-            key = input("Enter the key: ").strip()
-            if len(key) != 16 and not all(char in "0123456789abcdef" for char in key):
-                print("Invalid key. Please try again.")
-                continue
-            input_string = input("Enter the string to encrypt: ").strip()
-            print(f"Encrypted string: {Des.encrypt(key, input_string)}")
-        elif mode == "d":
-            key = input("Enter the key: ").strip()
-            if len(key) != 16 and not all(char in "0123456789abcdef" for char in key):
-                print("Invalid key. Please try again.")
-                continue
-            cipher_text = input("Enter the cipher text to decrypt: ").strip()
-            print(f"Decrypted string: {Des.decrypt(key, cipher_text)}")
+        match mode:
+            case "q":
+                break
+            case "k":
+                print(f"Generated key: {Des.generate_key()}")
+            case "e":
+                key = input("Enter the key: ").strip()
+                if len(key) != 16 and not all(char in "0123456789abcdef" for char in key):
+                    print("Invalid key. Please try again.")
+                    continue
+                input_string = input("Enter the string to encrypt: ").strip()
+                print(f"Encrypted string: {Des.encrypt(key, input_string)}")
+            case "d":
+                key = input("Enter the key: ").strip()
+                if len(key) != 16 and not all(char in "0123456789abcdef" for char in key):
+                    print("Invalid key. Please try again.")
+                    continue
+                cipher_text = input("Enter the cipher text to decrypt: ").strip()
+                print(f"Decrypted string: {Des.decrypt(key, cipher_text)}")