How should I practice Available Recipes from Initial Supplies?

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Available Recipes from Initial Supplies

Amazon● MediumFULLTIMEPHONE SCREEN

Problem statement

You are given distinct recipe names in recipes. Row ingredients[i] lists everything needed to make recipes[i]. An ingredient can be an initial supply, another recipe, or a name that is unavailable.

Every initial supplies item is available in unlimited quantity. Whenever every ingredient of a recipe is available, that recipe also becomes available in unlimited quantity and can be used by other recipes. A recipe with no ingredients is available immediately. Recipe-to-recipe dependencies form a directed acyclic graph.

The problem statement continues

Pro

Examples

Example 1

recipes = ["bread","sandwich"]ingredients = [["flour","water"],["bread","ham"]]supplies = ["flour","water","ham"]return = ["bread","sandwich"]

Bread becomes available first, so it can then enable sandwich.

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