diff --git a/Graph Algorithms/Block Swap/blockswap.py b/Graph Algorithms/Block Swap/blockswap.py
new file mode 100644
index 0000000..acd4c60
--- /dev/null
+++ b/Graph Algorithms/Block Swap/blockswap.py	
@@ -0,0 +1,41 @@
+# block swap for array rotation
+# recursive implementation
+def leftRotate(arr, d, n):
+	leftRotateRec(arr, 0, d, n);
+
+def leftRotateRec(arr, i, d, n):
+
+	if (d == 0 or d == n):
+		return;
+
+	if (n - d == d):
+		swap(arr, i, n - d + i, d);
+		return;
+
+	if (d < n - d):
+		swap(arr, i, n - d + i, d);
+		leftRotateRec(arr, i, d, n - d);
+
+	else:
+		swap(arr, i, d, n - d);
+		
+		leftRotateRec(arr, n - d + i, 2 * d - n, d);
+
+def printArray(arr, size):
+	for i in range(size):
+		print(arr[i], end = " ");
+	print();
+
+def swap(arr, fi, si, d):
+	for i in range(d):
+		temp = arr[fi + i];
+		arr[fi + i] = arr[si + i];
+		arr[si + i] = temp;
+
+# Driver Code
+if __name__ == '__main__':
+	arr = [1, 2, 3, 4, 5, 6, 7];
+	leftRotate(arr, 2, 7);
+	printArray(arr, 7);
+
+
diff --git a/Sorting/Bitonic Sort/Python/bitonicsort.py b/Sorting/Bitonic Sort/Python/bitonicsort.py
new file mode 100644
index 0000000..27b7423
--- /dev/null
+++ b/Sorting/Bitonic Sort/Python/bitonicsort.py	
@@ -0,0 +1,33 @@
+# Python program for Bitonic Sort. 
+
+def compAndSwap(a, i, j, dire):
+	if (dire==1 and a[i] > a[j]) or (dire==0 and a[i] < a[j]):
+		a[i],a[j] = a[j],a[i]
+
+def bitonicMerge(a, low, cnt, dire):
+	if cnt > 1:
+		k = cnt//2
+		for i in range(low , low+k):
+			compAndSwap(a, i, i+k, dire)
+		bitonicMerge(a, low, k, dire)
+		bitonicMerge(a, low+k, k, dire)
+
+def bitonicSort(a, low, cnt,dire):
+	if cnt > 1:
+		k = cnt//2
+		bitonicSort(a, low, k, 1)
+		bitonicSort(a, low+k, k, 0)
+		bitonicMerge(a, low, cnt, dire)
+
+def sort(a,N, up):
+	bitonicSort(a,0, N, up)
+
+# Driver code
+a = [3, 7, 4, 8, 6, 2, 1, 5]
+n = len(a)
+up = 1
+
+sort(a, n, up)
+print ("\n\nSorted array is")
+for i in range(n):
+	print("%d" %a[i],end=" ")
diff --git a/Sorting/Cocktail Sort/# Python program for implementation of c.py b/Sorting/Cocktail Sort/# Python program for implementation of c.py
new file mode 100644
index 0000000..1a12967
--- /dev/null
+++ b/Sorting/Cocktail Sort/# Python program for implementation of c.py	
@@ -0,0 +1,35 @@
+# Python program for implementation of cocktail Sort
+def cocktailSort(a):
+	n = len(a)
+	swapped = True
+	start = 0
+	end = n-1
+	while (swapped == True):
+
+		swapped = False
+
+		for i in range(start, end):
+			if (a[i] > a[i + 1]):
+				a[i], a[i + 1] = a[i + 1], a[i]
+				swapped = True
+
+		if (swapped == False):
+			break
+
+		swapped = False
+		end = end-1
+
+		for i in range(end-1, start-1, -1):
+			if (a[i] > a[i + 1]):
+				a[i], a[i + 1] = a[i + 1], a[i]
+				swapped = True
+
+		start = start + 1
+
+
+# Driver code
+a = [5, 1, 4, 2, 8, 0, 2]
+cocktailSort(a)
+print("Sorted array is:")
+for i in range(len(a)):
+	print("% d" % a[i])