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isBitonic

Interview question of the issue #331 of rendezvous with cassidoo.

The Question

Write a function that determines if an array of numbers is a bitonic sequence. A bitonic sequence is a sequence of numbers in which the numbers are in increasing order, and after a certain point, they start decreasing. Extra credit: print the peak number in the sequence!

Example:

> isBitonic([1,2,3,2])
> true // extra credit: 3

> isBitonic([1,2,3])
> false

> isBitonic([3,4,5,5,5,2,1])
> true // extra credit: 5

Installing & Running

Just pnpm i to install all dependencies and then pnpm t to run the tests!