Pattern Defeating Quicksort
Pattern Defeating Quicksort Pattern Defeating Quicksort, often called pdqsort, is a modern quicksort variant designed to handle structured and adversarial inputs efficiently. It improves on classical quicksort by detecting patterns that lead to bad partitions and adapting its behavior. It combines fast partitioning, smart pivot selection, and fallback strategies. Problem Given an array $A$ of length $n$, reorder it such that: $$ A[0] \le A[1] \le \dots \le A[n-1] $$...