Minimum Number of Increments on Subarrays to Form a Target Array: coding question

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Given a target array and allowed to increment any contiguous subarray by 1, find the minimum operations to build it — a greedy/scan problem where the optimal cost equals target[0] plus the sum of all positive increases target[i]-target[i-1], computable in O(n) time.

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Leetcode 1526. Minimum Number of Increments on Subarrays to Form a Target Array
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Minimum Number of Increments on Subarrays to Form a Target Array

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Minimum Number of Increments on Subarrays to Form a Target Array

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