Leetcode 1477 Solution

This article provides solution to leetcode question 1477 (product-of-the-last-k-numbers)
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https://leetcode.com/problems/product-of-the-last-k-numbers

Solution

class ProductOfNumbers:

    def __init__(self):
        self.products = [1]

    def add(self, num: int) -> None:
        if num == 0:
            self.products = [1]
        else:
            self.products.append(num * self.products[-1])

    def getProduct(self, k: int) -> int:
        if k >= len(self.products):
            return 0
        else:
            return self.products[-1] // self.products[-1 - k]



# Your ProductOfNumbers object will be instantiated and called as such:
# obj = ProductOfNumbers()
# obj.add(num)
# param_2 = obj.getProduct(k)