Merge pull request #3 from charan-s108/charan-s108-shortner-1

Create URL Shortner.py

Author: charan-s108

Coding/URL Shortner.py

@@ -0,0 +1,59 @@
+# URL Shortener Program
+# This program generates short URLs for long URLs and provides redirection to the original URL.
+
+import hashlib
+
+# Dictionary to store URL mappings (short URL to long URL)
+url_mapping = {}
+
+def generate_short_url(long_url):
+    # Hash the long URL to generate a unique identifier
+    hash_object = hashlib.md5(long_url.encode())
+    hash_hex = hash_object.hexdigest()
+    
+    # Take the first 8 characters of the hash as the short URL
+    short_url = hash_hex[:8]
+    
+    return short_url
+
+def shorten_url():
+    print("Welcome to the URL Shortener!")
+    long_url = input("Enter the long URL to shorten: ")
+    
+    # Check if the long URL is already in the mapping
+    if long_url in url_mapping:
+        print("Short URL: " + url_mapping[long_url])
+    else:
+        # Generate a new short URL and add it to the mapping
+        short_url = generate_short_url(long_url)
+        url_mapping[long_url] = short_url
+        print("Short URL: " + short_url)
+
+def redirect_url():
+    short_url = input("Enter the short URL to redirect: ")
+    
+    # Check if the short URL exists in the mapping
+    if short_url in url_mapping.values():
+        # Find the corresponding long URL
+        long_url = next(key for key, value in url_mapping.items() if value == short_url)
+        print("Redirecting to the original URL: " + long_url)
+    else:
+        print("Short URL not found. Please enter a valid short URL.")
+
+if __name__ == "__main__":
+    while True:
+        print("\nMenu:")
+        print("1. Shorten a URL")
+        print("2. Redirect a URL")
+        print("3. Exit")
+        
+        choice = input("Select an option (1/2/3): ")
+        
+        if choice == "1":
+            shorten_url()
+        elif choice == "2":
+            redirect_url()
+        elif choice == "3":
+            break
+        else:
+            print("Invalid choice. Please select a valid option.")