stack implemented using array

Author: raianmol172

stack_using_array.py

@@ -0,0 +1,40 @@
+from sys import maxsize
+
+
+def createStack():
+    stack = []
+    return stack
+
+
+def isEmpty(stack):
+    return len(stack) == 0
+
+
+def push(stack, data):
+    stack.append(data)
+    print(data, "pushed to stack")
+
+
+def pop(stack):
+    if isEmpty(stack):
+        return str(-maxsize - 1)
+
+    return stack.pop()
+
+
+def peek(stack):
+    if isEmpty(stack):
+        return str(-maxsize - 1)
+    else:
+        return stack[len(stack) - 1]
+
+
+stack = createStack()
+push(stack, 10)
+push(stack, 20)
+push(stack, 30)
+print(stack)
+pop(stack)
+print(stack)
+print(peek(stack))
+print(isEmpty(stack))