1526. Minimum Number of Increments on Subarrays to Form a Target Array
Автор: Chhavi Bansal
Загружено: 2020-07-25
Просмотров: 1806
Описание:
https://leetcode.com/problems/minimum...
Given an array of positive integers target and an array initial of same size with all zeros.
Return the minimum number of operations to form a target array from initial if you are allowed to do the following operation:
Choose any subarray from initial and increment each value by one.
The answer is guaranteed to fit within the range of a 32-bit signed integer.
Example 1:
Input: target = [1,2,3,2,1]
Output: 3
Explanation: We need at least 3 operations to form the target array from the initial array.
[0,0,0,0,0] increment 1 from index 0 to 4 (inclusive).
[1,1,1,1,1] increment 1 from index 1 to 3 (inclusive).
[1,2,2,2,1] increment 1 at index 2.
[1,2,3,2,1] target array is formed.
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