Package g1401_1500.s1425_constrained_subsequence_sum

Class Solution

java.lang.Object
g1401_1500.s1425_constrained_subsequence_sum.Solution
public class Solution extends java.lang.Object
1425 - Constrained Subsequence Sum.

Hard

Given an integer array nums and an integer k, return the maximum sum of a non-empty subsequence of that array such that for every two consecutive integers in the subsequence, nums[i] and nums[j], where i < j, the condition j - i <= k is satisfied.

A subsequence of an array is obtained by deleting some number of elements (can be zero) from the array, leaving the remaining elements in their original order.

Example 1:

Input: nums = [10,2,-10,5,20], k = 2

Output: 37

Explanation: The subsequence is [10, 2, 5, 20].

Example 2:

Input: nums = [-1,-2,-3], k = 1

Output: -1

Explanation: The subsequence must be non-empty, so we choose the largest number.

Example 3:

Input: nums = [10,-2,-10,-5,20], k = 2

Output: 23

Explanation: The subsequence is [10, -2, -5, 20].

Constraints:

  • 1 <= k <= nums.length <= 105
  • -104 <= nums[i] <= 104

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    constrainedSubsetSum(int[] nums, int k)
     

    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

    • constrainedSubsetSum

      public int constrainedSubsetSum(int[] nums, int k)