Given a string which contains placeholders, substitue them with the values. \n\n```\nvalue_map = \n{\n  "V1": "Hello",\n  "V2": "$V1",\n  "V3": "Hola $V2"\n}\n```\n\n```\ninput string: Sky $V1 $V2 $V3\n\noutput: Sky Hello Hello Hola Hello\n\nnote: nesting can be very deep \n```\n\nI wasnt able to code this perfectly as at first I just programmed for no nestedness.

Given a string which contains placeholders, substitue them with the values. \n\n\nvalue_map = \n{\n  "V1": "Hello",\n  "V2": "$V1",\n  "V3": "Hola $V2"\n}\n\n\n