Package g1301_1400.s1343_number_of_sub_arrays_of_size_k_and_average_greater_than_or_equal_to_threshold

Class Solution

java.lang.Object
g1301_1400.s1343_number_of_sub_arrays_of_size_k_and_average_greater_than_or_equal_to_threshold.Solution
public class Solution extends java.lang.Object
1343 - Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold.

Medium

Given an array of integers arr and two integers k and threshold, return the number of sub-arrays of size k and average greater than or equal to threshold.

Example 1:

Input: arr = [2,2,2,2,5,5,5,8], k = 3, threshold = 4

Output: 3

Explanation: Sub-arrays [2,5,5],[5,5,5] and [5,5,8] have averages 4, 5 and 6 respectively. All other sub-arrays of size 3 have averages less than 4 (the threshold).

Example 2:

Input: arr = [11,13,17,23,29,31,7,5,2,3], k = 3, threshold = 5

Output: 6

Explanation: The first 6 sub-arrays of size 3 have averages greater than 5. Note that averages are not integers.

Constraints:

  • 1 <= arr.length <= 105
  • 1 <= arr[i] <= 104
  • 1 <= k <= arr.length
  • 0 <= threshold <= 104

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    numOfSubarrays(int[] arr, int k, int threshold)
     

    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

    • numOfSubarrays

      public int numOfSubarrays(int[] arr, int k, int threshold)