diff --git a/designHashset.py b/designHashset.py
new file mode 100644
index 00000000..fc70e96f
--- /dev/null
+++ b/designHashset.py
@@ -0,0 +1,32 @@
+class MyHashSet:
+
+    def __init__(self):
+        self.hashSet=[]
+        primary = 10000
+        secondary = 10000
+    def key1(self,index):
+        return index%primary
+    def key2(self,index):
+        return index//secondary
+
+    def add(self, key: int) -> None:
+        if not key in self.hashSet:
+            self.hashSet.append(key)
+
+    def remove(self, key: int) -> None:
+        if key in self.hashSet:
+            self.hashSet.remove(key)
+
+
+    def contains(self, key: int) -> bool:
+        if key in self.hashSet:
+            return True
+        return False
+
+
+
+# Your MyHashSet object will be instantiated and called as such:
+# obj = MyHashSet()
+# obj.add(key)
+# obj.remove(key)
+# param_3 = obj.contains(key)
\ No newline at end of file
diff --git a/minStack.py b/minStack.py
new file mode 100644
index 00000000..6ad18a4f
--- /dev/null
+++ b/minStack.py
@@ -0,0 +1,37 @@
+class MinStack:
+
+    def __init__(self):
+        self.arr = []
+        self.st = []
+        self.minValue = float("inf")
+        self.st.append(self.minValue)
+
+
+    def push(self, val: int) -> None:
+        self.minValue = min(val, self.minValue)
+        self.arr.append(val)
+
+        self.st.append(self.minValue)
+
+
+    def pop(self) -> None:
+        self.arr.pop()
+        self.st.pop()
+        self.minValue = self.st[-1]
+
+
+    def top(self) -> int:
+        return self.arr[-1]
+
+
+    def getMin(self) -> int:
+        return self.minValue
+
+
+
+# Your MinStack object will be instantiated and called as such:
+# obj = MinStack()
+# obj.push(val)
+# obj.pop()
+# param_3 = obj.top()
+# param_4 = obj.getMin()
\ No newline at end of file