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 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 and Description
Solution()

Method Summary

Modifier and Type	Method and 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 Detail

Solution

public Solution()

Method Detail

numOfSubarrays

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