From 4958642a014b000eb59462b8e16359fc4ad0180f Mon Sep 17 00:00:00 2001
From: sachinkapalidigi <beckhamd36@gmail.com>
Date: Wed, 28 Jul 2021 22:38:18 +0530
Subject: [PATCH] feat: lsp solution using composition

---
 .../SOLID/lsp/stack/before/StackWrong.java    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/oops/SOLID/lsp/stack/before/StackWrong.java b/src/oops/SOLID/lsp/stack/before/StackWrong.java
index 1170e573..7a787310 100644
--- a/src/oops/SOLID/lsp/stack/before/StackWrong.java
+++ b/src/oops/SOLID/lsp/stack/before/StackWrong.java
@@ -40,3 +40,22 @@ public static void main(String[] args) {
 		System.out.println(st.top());
 	}
 }
+
+
+class StackCorrect {
+	private int topPointer = 0;
+	private ArrayList<Integer> data = new ArrayList<Integer>();
+
+	public void push(Integer a) {
+		data.add(topPointer, a);
+		topPointer++;
+	}	
+	public void pop() {
+		data.remove(topPointer-1);
+		topPointer--;
+	}
+	public Integer top() {
+		return data.get(topPointer-1);
+	}
+
+}
\ No newline at end of file