Create 1343-number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold.kt

Author: a93a

Diff for: kotlin/1343-number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold.kt

@@ -0,0 +1,17 @@
+class Solution {
+    fun numOfSubarrays(arr: IntArray, k: Int, threshold: Int): Int {
+        
+        var sum = 0
+        var res = 0
+
+        for (i in 0 until k-1) sum += arr[i]
+
+        for (i in k-1 until arr.size) {
+            sum += arr[i]
+            if (sum / k >= threshold) res++
+            sum -= arr[i-k+1]
+        }
+
+        return res
+    }
+}