LeetCode 768: Counting Maximum Chunks to Produce a Sorted Array

LeetCode problem 768 challenges programmers to split an integer array into the maximum number of partitions such that sorting each chunk individually and concatenating them yields the fully sorted array. For example, the array [2,1,3,4,4] can be split into three valid chunks, while a reverse-sorted array like [5,4,3,2,1] can only form one. A min-heap based Java solution solves this by comparing the running sum of sorted elements against the running sum of original elements at each index. Whenever both sums are equal, a valid chunk boundary is identified and the chunk count is incremented. This greedy approach efficiently determines the maximum number of chunks in a single pass through the array.