diff --git a/Sample.java b/Sample.java
deleted file mode 100644
index 1739a9cbc..000000000
--- a/Sample.java
+++ /dev/null
@@ -1,7 +0,0 @@
-// Time Complexity :
-// Space Complexity :
-// Did this code successfully run on Leetcode :
-// Any problem you faced while coding this :
-
-
-// Your code here along with comments explaining your approach
diff --git a/min stack problem b/min stack problem
new file mode 100644
index 000000000..caecbad64
--- /dev/null
+++ b/min stack problem	
@@ -0,0 +1,31 @@
+class MinStack {
+    Stack<Integer>st;
+    Stack<Integer> minst;
+    int min;
+    public MinStack() {
+        this.st=new Stack<>();
+        this.minst=new Stack<>();
+        this.min=Integer.MAX_VALUE;
+        this.minst.push(min);
+    }
+    
+    public void push(int val) {
+        min=Math.min(min,val);
+        st.push(val);
+        minst.push(min);
+    }
+    
+    public void pop() {
+        st.pop();
+        minst.pop();
+        min=minst.peek();
+    }
+    
+    public int top() {
+        return st.peek();
+    }
+    
+    public int getMin() {
+        return min;
+    }
+}