koko.py

class Solution:
    def minEatingSpeed(self, piles: List[int], h: int) -> int:
        # Can Koko finish the piles given this speed k?
        def check(k):
            hours_taken = 0
            for n in piles:
                if n%k==0:
                    hours_taken += n//k
                else:
                    hours_taken += n//k + 1
            if hours_taken>h:
                return False
            return True
        
        left,right = 1 , max(piles)
        while left<right:
            mid = left+(right-left)//2
            if check(mid):
                right = mid
            else:
                left = mid+1
        return left