Palindrome Linked List
Check if a linked list is a palindrome using O(1) extra space
Reorder List
Reorder a linked list by interleaving nodes from the beginning and end
Reverse Bits
Reverse the bits of a given 32-bit unsigned integer.
Reverse Nodes in k-Group
Reverse every k consecutive nodes in a linked list
Reverse String
Reverse a string in-place using O(1) extra memory.