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1714. Sum Of Special Evenly-Spaced Elements In Array

You are given a 0-indexed integer array nums consisting of n non-negative integers.

You are also given an array queries, where queries[i] = [xi, yi]. The answer to the ith query is the sum of all nums[j] where xi <= j < n and (j - xi) is divisible by yi.

Return an array answer where answer.length == queries.length and answer[i] is the answer to the ith query modulo 109 + 7.

 

Example 1:

Input: nums = [0,1,2,3,4,5,6,7], queries = [[0,3],[5,1],[4,2]]
Output: [9,18,10]
Explanation: The answers of the queries are as follows:
1) The j indices that satisfy this query are 0, 3, and 6. nums[0] + nums[3] + nums[6] = 9
2) The j indices that satisfy this query are 5, 6, and 7. nums[5] + nums[6] + nums[7] = 18
3) The j indices that satisfy this query are 4 and 6. nums[4] + nums[6] = 10

Example 2:

Input: nums = [100,200,101,201,102,202,103,203], queries = [[0,7]]
Output: [303]

 

Constraints:

  • n == nums.length
  • 1 <= n <= 5 * 104
  • 0 <= nums[i] <= 109
  • 1 <= queries.length <= 1.5 * 105
  • 0 <= xi < n
  • 1 <= yi <= 5 * 104

Difficulty:

Hard

Lock:

Prime

Company:

MakeMyTrip Sprinklr

Problem Solution

1714-Sum-Of-Special-Evenly-Spaced-Elements-In-Array

All Problems:

Link to All Problems
All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.