Novicesyntax & basics
The Ferryman's Silver Toll
The ferryman at bitwick's south landing keeps his ledger in copper but his strongbox holds only silver. Every crossing is priced in copper, and the fare must be settled in whole silver coins — he gives no change, and he will not push off a single copper short.
You are given two integers:
toll— the price of the crossing in copper, zero or greater.rate— how many copper one silver coin is worth, always one or greater.
Write silverToll(toll, rate), which returns an integer: the smallest number of whole silver coins whose total copper value is at least toll.
examples
- case 1
toll of 25, rate of 123 — two silver are worth 24 copper, one short, so a third is needed - case 2
toll of 24, rate of 122 — the fare divides evenly, so no extra coin - case 3
toll of 0, rate of 70 — nothing owed, nothing paid
- reward
- 130 XP
- signature
silverToll
TypeScript, run as ES2022 — types are stripped, not checked. If a JS engine would run it, so will we.
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- one copper over two silver
- exact multiple takes no extra coin
- no toll at all
- a single copper still costs a coin
- copper and silver worth the same
- a long crossing
- one short of an even trade