docs: Leet_1343_NumberofSubarraysofSizeKandAverageGreaterthanorEqualtoThreshold

Author: choijw1004

src/ver2/Leet_1343_NumberofSubarraysofSizeKandAverageGreaterthanorEqualtoThreshold/Solution.java

@@ -0,0 +1,29 @@
+package ver2.Leet_1343_NumberofSubarraysofSizeKandAverageGreaterthanorEqualtoThreshold;
+
+class Solution {
+    public int numOfSubarrays(int[] arr, int k, int threshold) {
+        int i = 0;
+        int j = 0;
+        int n = arr.length;
+        int ans = 0;
+        int sum = 0;
+
+        while(j < n){
+            if(j - i + 1 < k){
+                sum += arr[j];
+                j++;
+            }
+            else{
+                sum += arr[j];
+
+                if(sum / k >= threshold) ans++;
+
+                sum -= arr[i];
+
+                i++;
+                j++;
+            }
+        }
+        return ans;
+    }
+}