Solution: Construct Target Array With Multiple Sums
Explore how to verify if it is possible to construct a target array from an array of ones by applying a reverse engineering strategy using heaps. Understand how using a max heap to process the largest elements combined with modulo operations optimizes this problem. This lesson guides you through the algorithm, its time and space complexity, and demonstrates how working backward simplifies otherwise exponential growth in computations.
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Statement
You are given an array target of n integers.
Starting from an array arr of size n where every element is 1, you may perform the following operation any number of times:
Let
xbe the sum of all current elements inarr.Pick an index
iand setarr[i] = x.
Your task is to return True if it’s possible to construct target from arr, otherwise return False.
Constraints:
n == target.lengthn...