diff --git a/Populating Next Right Pointers in Each Node.py b/116. Populating Next Right Pointers in Each Node.py similarity index 100% rename from Populating Next Right Pointers in Each Node.py rename to 116. Populating Next Right Pointers in Each Node.py diff --git a/Populating Next Right Pointers in Each Node II.py b/117. Populating Next Right Pointers in Each Node II.py similarity index 100% rename from Populating Next Right Pointers in Each Node II.py rename to 117. Populating Next Right Pointers in Each Node II.py diff --git a/Lowest Common Ancestor of a Binary Tree.py b/236. Lowest Common Ancestor of a Binary Tree.py similarity index 100% rename from Lowest Common Ancestor of a Binary Tree.py rename to 236. Lowest Common Ancestor of a Binary Tree.py