death-by-coffee

Death by Coffee

Background

I drink too much coffee. Eventually it will probably kill me.

Or will it...?

Anyway, there's no way to know.

Or is there...?

The Discovery of the Formula

I proudly announce my discovery of a formula for measuring the life-span of coffee drinkers!

For

• h is a health number assigned to each person (8 digit date of birth YYYYMMDD)
• CAFE is a cup of regular coffee
• DECAF is a cup of decaffeinated coffee

To determine the life-time coffee limits:

• Drink cups of coffee (i.e. add to h) until any part of the health number includes DEAD
• If the test subject can survive drinking five thousand cups without being DEAD then coffee has no ill effect on them

Kata Task

Given the test subject's date of birth, return an array describing their life-time coffee limits

[ regular limit , decaffeinated limit ]

Notes

• The limits are 0 if the subject is unaffected as described above

• At least 1 cup must be consumed (Just thinking about coffee cannot kill you!)

Examples

• John was born 19/Jan/1950 so h=19500119. His coffee limits are [2645, 1162] which is only about 1 cup per week. You better cut back John...How are you feeling? You don't look so well.

• Susan (11/Dec/1965) is unaffected by decaffeinated coffee, but regular coffee is very bad for her [111, 0]. Just stick to the decaf Susan.

• Elizabeth (28/Nov/1964) is allergic to decaffeinated coffee. Dead after only 11 cups [0, 11]. Read the label carefully Lizzy! Is it worth the risk?

• Peter (4/Sep/1965) can drink as much coffee as he likes [0, 0]. You're a legend Peter!!

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Hint: https://en.wikipedia.org/wiki/Hexadecimal

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*Note: A life-span prediction formula this accurate has got to be worth a lot of money to somebody! I am willing to sell my copyright to the highest bidder. Contact me via the discourse section of this Kata.*