diff --git a/heap.py b/heap.py
new file mode 100644
index 000000000000..9b3443209c61
--- /dev/null
+++ b/heap.py
@@ -0,0 +1,65 @@
+class MaxHeap:
+    def __init__(self):
+        self.items = [0] * 100
+        self.size = 0
+
+    def swap(self, a, b):
+        self.items[a], self.items[b] = self.items[b], self.items[a]
+
+    def heapify_up(self, index):
+        while index > 0 and self.items[(index - 1) // 2] < self.items[index]:
+            self.swap((index - 1) // 2, index)
+            index = (index - 1) // 2
+
+    def heapify_down(self, index):
+        largest = index
+        left_child = 2 * index + 1
+        right_child = 2 * index + 2
+
+        if left_child < self.size and self.items[left_child] > self.items[largest]:
+            largest = left_child
+        if right_child < self.size and self.items[right_child] > self.items[largest]:
+            largest = right_child
+
+        if largest != index:
+            self.swap(index, largest)
+            self.heapify_down(largest)
+
+    def insert(self, value):
+        if self.size >= 100:
+            print("Heap is full. Cannot insert.")
+            return
+        self.items[self.size] = value
+        self.size += 1
+        self.heapify_up(self.size - 1)
+
+    def delete_max(self):
+        if self.size == 0:
+            print("Heap is empty. Cannot delete.")
+            return -1
+        deleted_item = self.items[0]
+        self.items[0] = self.items[self.size - 1]
+        self.size -= 1
+        self.heapify_down(0)
+        return deleted_item
+
+
+def heap_sort(arr):
+    heap = MaxHeap()
+
+    # Inserting elements into the max heap
+    for i in range(len(arr)):
+        heap.insert(arr[i])
+
+    # Deleting elements from the max heap and storing them in sorted order
+    for i in range(len(arr) - 1, -1, -1):
+        arr[i] = heap.delete_max()
+
+    return arr
+
+
+arr = [4, 10, 3, 5, 1]
+arr = heap_sort(arr)
+
+# Displaying sorted array
+print("Sorted array:", arr)