How do you say good morning in Algerian language?

There's no singular "Algerian language" - Algeria has several languages spoken. The most common are:

* Arabic (Darija): The most widely spoken language in Algeria. You would say "Sabah al-khayr" (صباح الخير).

* French: Also widely spoken in Algeria, especially in formal settings. You would say "Bonjour".

* Tamazight (Berber): A variety of Berber languages are spoken in Algeria. Depending on the specific dialect, you might say "Aḥḍu aṣ-ṣbaḥ" (for Kabyle).

If you're unsure which language is best to use, "Sabah al-khayr" is a safe bet as it's understood throughout Algeria.