diff --git a/src/main/java/com/dota/slidingWindow/_2302/Solution.java b/src/main/java/com/dota/slidingWindow/_2302/Solution.java
new file mode 100644
index 0000000..932eaaa
--- /dev/null
+++ b/src/main/java/com/dota/slidingWindow/_2302/Solution.java
@@ -0,0 +1,21 @@
+package com.dota.slidingWindow._2302;
+
+class Solution {
+    public long countSubarrays(int[] nums, long k) {
+        int n = nums.length;
+        int l = 0;
+        long res = 0;
+        long sum = 0;
+        long t;
+        for (int i = 0; i < n; i++) {
+            sum += nums[i];
+            t = sum*(i-l+1);
+            while (t>=k) {
+                sum -= nums[l++];
+                t = sum*(i-l+1);
+            }
+            res += (i-l+1);
+        }
+        return res;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/dota/slidingWindow/_2761/Solution.java b/src/main/java/com/dota/slidingWindow/_2761/Solution.java
new file mode 100644
index 0000000..a336c78
--- /dev/null
+++ b/src/main/java/com/dota/slidingWindow/_2761/Solution.java
@@ -0,0 +1,7 @@
+package com.dota.slidingWindow._2761;
+
+class Solution {
+    public long continuousSubarrays(int[] nums) {
+
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/dota/slidingWindow/_2762/Solution.java b/src/main/java/com/dota/slidingWindow/_2762/Solution.java
new file mode 100644
index 0000000..452e83d
--- /dev/null
+++ b/src/main/java/com/dota/slidingWindow/_2762/Solution.java
@@ -0,0 +1,35 @@
+package com.dota.slidingWindow._2762;
+
+import java.util.ArrayDeque;
+
+class Solution {
+	public long continuousSubarrays(int[] nums) {
+		int n = nums.length;
+		int l = 0;
+		var max = new ArrayDeque<Integer>();
+		long res = 0;
+		var min = new ArrayDeque<Integer>();
+		for (int i = 0; i < n; i++) {
+			while (!max.isEmpty() && nums[i] > max.getLast()) {
+				max.removeLast();
+			}
+			max.addLast(nums[i]);
+			while (!min.isEmpty() && nums[i] < min.getLast()) {
+				min.removeLast();
+			}
+			min.addLast(nums[i]);
+			while (max.getFirst() - min.getFirst() > 2) {
+				if (max.getFirst() == nums[l]) {
+					max.removeFirst();
+				}
+				if (min.getFirst() == nums[l]) {
+					min.removeFirst();
+				}
+				l++;
+			}
+			res += (i-l+1);
+		}
+
+		return res;
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/com/dota/slidingWindow/_3258/Solution.java b/src/main/java/com/dota/slidingWindow/_3258/Solution.java
new file mode 100644
index 0000000..ea7c89f
--- /dev/null
+++ b/src/main/java/com/dota/slidingWindow/_3258/Solution.java
@@ -0,0 +1,19 @@
+package com.dota.slidingWindow._3258;
+
+class Solution {
+	public int countKConstraintSubstrings(String s, int k) {
+		int res = 0;
+		int i = 0;
+		int n = s.length();
+		int[] dp = new int[2];
+		for (int l = 0; l < n; l++) {
+			int t = s.charAt(l) - '0';
+			dp[t]++;
+			while (dp[0] > k && dp[1] > k) {
+				dp[s.charAt(i++) - '0']--;
+			}
+			res += (l-i+1);
+		}
+		return res;
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/com/dota/slidingWindow/_68/Solution.java b/src/main/java/com/dota/slidingWindow/_68/Solution.java
new file mode 100644
index 0000000..9d7e7c4
--- /dev/null
+++ b/src/main/java/com/dota/slidingWindow/_68/Solution.java
@@ -0,0 +1,19 @@
+package com.dota.slidingWindow._68;
+
+class Solution {
+	public int beautifulBouquet(int[] flowers, int cnt) {
+		int n = flowers.length;
+		int res = 0;
+		int l = 0;
+		var dp = new int[100001];
+		for (int i = 0; i < n; i++) {
+			dp[flowers[i]]++;
+			while (dp[flowers[i]] > cnt) {
+				dp[flowers[l]]--;
+				l++;
+			}
+			res += l;
+		}
+		return n * (n + 1) / 2 - res;
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/com/dota/slidingWindow/_713/Solution.java b/src/main/java/com/dota/slidingWindow/_713/Solution.java
new file mode 100644
index 0000000..31a11a3
--- /dev/null
+++ b/src/main/java/com/dota/slidingWindow/_713/Solution.java
@@ -0,0 +1,19 @@
+package com.dota.slidingWindow._713;
+
+class Solution {
+    public int numSubarrayProductLessThanK(int[] nums, int k) {
+        int res = 0;
+        int n  = nums.length;
+        int sum = 1;
+        int l = 0;
+        for (int i = 0; i < n; i++) {
+            sum *= nums[i];
+            while(sum >=k && l<n) {
+                sum /= nums[l++];
+            }
+            res += (i - l + 1);
+        }
+
+        return res;
+    }
+}
\ No newline at end of file