Package g1501_1600.s1526_minimum_number_of_increments_on_subarrays_to_form_a_target_array

Class Solution

java.lang.Object

g1501_1600.s1526_minimum_number_of_increments_on_subarrays_to_form_a_target_array.Solution

public class Solution
extends Object

1526 - Minimum Number of Increments on Subarrays to Form a Target Array\. Hard You are given an integer array `target`. You have an integer array `initial` of the same size as `target` with all elements initially zeros. In one operation you can choose **any** subarray from `initial` and increment each value by one. Return _the minimum number of operations to form a_ `target` _array from_ `initial`. The test cases are generated so that the answer fits in a 32-bit 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. **Example 2:** **Input:** target = [3,1,1,2] **Output:** 4 **Explanation:** [**0,0,0,0** ] -> [1,1,1, **1** ] -> [**1** ,1,1,2] -> [**2** ,1,1,2] -> [3,1,1,2] **Example 3:** **Input:** target = [3,1,5,4,2] **Output:** 7 **Explanation:** [**0,0,0,0,0** ] -> [**1** ,1,1,1,1] -> [**2** ,1,1,1,1] -> [3,1, **1,1,1** ] -> [3,1, **2,2** ,2] -> [3,1, **3,3** ,2] -> [3,1, **4** ,4,2] -> [3,1,5,4,2]. **Constraints:** * 1 <= target.length <= 105 * 1 <= target[i] <= 105

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	minNumberOperations(int[] target)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

minNumberOperations

public int minNumberOperations(int[] target)