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Problem Link
https://leetcode.com/problems/last-stone-weight/description/
Solution
In this problem, we need to repeatedly take the two largest numbers from an array of integers
stones
, and then push a new number based on the two numbers.Therefore, we use a max heap to efficiently pop the largest number.
This way, popping the largest number can operate in
O(1)
, and pushing a new number can operate inO(log n)
.