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Computer Science

737What is Sorting?
738Stability in Sorting
739In-Place vs Out-of-Place Sorting
740Comparison-Based Sorting Overview
741Bubble Sort: Algorithm
742Bubble Sort: Analysis
743Bubble Sort: Optimization
744Selection Sort: Algorithm
745Selection Sort: Analysis
746Selection Sort: Minimizing Swaps
747Insertion Sort: Algorithm
748Insertion Sort: Analysis
749Insertion Sort: Binary Search Optimization
750When to Use Elementary Sorts
751Comparing Elementary Sorts
752Introduction to Mergesort
753The Divide-and-Conquer Strategy
754The Merge Operation
755Implementing Mergesort Recursively
756Mergesort Time Complexity Analysis
757Mergesort Space Complexity
758Mergesort Stability
759Optimizing Mergesort
760Bottom-Up Mergesort
761Mergesort Applications and Tradeoffs
762Quicksort: The Divide-and-Conquer Sorting Strategy
763The Partition Operation: Core of Quicksort
764Choosing a Pivot: Strategies and Tradeoffs
765Lomuto Partition Scheme
766Hoare Partition Scheme
767Quicksort Recursive Implementation
768Best-Case Analysis: Balanced Partitions
769Worst-Case Analysis: Already Sorted Input
770Average-Case Analysis: Expected Performance
771Randomized Quicksort: Avoiding Worst Case
772Three-Way Partitioning for Duplicate Keys
773Space Complexity and Tail Recursion
774Quicksort vs Mergesort: Practical Comparison
775Hybrid Quicksort: Insertion Sort for Small Subarrays
776Iterative Quicksort Using an Explicit Stack
777Heapsort Overview and Motivation
778Converting an Array into a Max-Heap
779The Heapsort Algorithm Steps
780In-Place Sorting with Heapsort
781Heapsort Time Complexity Analysis
782Heapsort Space Complexity
783Heapsort Stability
784Heapsort vs Quicksort Comparison
785Heapsort vs Mergesort Comparison
786Practical Applications of Heapsort
787Breaking the O(n log n) Barrier
788Counting Sort: Basic Concept
789Counting Sort: Implementation
790Counting Sort: Stability
791Counting Sort: Space-Time Tradeoffs
792Radix Sort: Digit-by-Digit Sorting
793Radix Sort: LSD vs MSD
794Radix Sort: Implementation and Analysis
795Bucket Sort: Partitioning the Range
796Bucket Sort: Implementation
797Bucket Sort: When It Works Best
798Linear-Time Sorting: Practical Considerations
799When to Use Which Sorting Algorithm
800Hybrid Sorting Strategies
801Introsort: The Best of Both Worlds
802Timsort: Python's Default Sorting Algorithm
803Stability in Production Sorting
804In-Place vs Out-of-Place Tradeoffs
805Cache-Friendly Sorting Techniques
806Parallel Sorting Algorithms
807External Sorting for Large Datasets
808Standard Library Sort Functions

Computer Science

737What is Sorting?
738Stability in Sorting
739In-Place vs Out-of-Place Sorting
740Comparison-Based Sorting Overview
741Bubble Sort: Algorithm
742Bubble Sort: Analysis
743Bubble Sort: Optimization
744Selection Sort: Algorithm
745Selection Sort: Analysis
746Selection Sort: Minimizing Swaps
747Insertion Sort: Algorithm
748Insertion Sort: Analysis
749Insertion Sort: Binary Search Optimization
750When to Use Elementary Sorts
751Comparing Elementary Sorts
752Introduction to Mergesort
753The Divide-and-Conquer Strategy
754The Merge Operation
755Implementing Mergesort Recursively
756Mergesort Time Complexity Analysis
757Mergesort Space Complexity
758Mergesort Stability
759Optimizing Mergesort
760Bottom-Up Mergesort
761Mergesort Applications and Tradeoffs
762Quicksort: The Divide-and-Conquer Sorting Strategy
763The Partition Operation: Core of Quicksort
764Choosing a Pivot: Strategies and Tradeoffs
765Lomuto Partition Scheme
766Hoare Partition Scheme
767Quicksort Recursive Implementation
768Best-Case Analysis: Balanced Partitions
769Worst-Case Analysis: Already Sorted Input
770Average-Case Analysis: Expected Performance
771Randomized Quicksort: Avoiding Worst Case
772Three-Way Partitioning for Duplicate Keys
773Space Complexity and Tail Recursion
774Quicksort vs Mergesort: Practical Comparison
775Hybrid Quicksort: Insertion Sort for Small Subarrays
776Iterative Quicksort Using an Explicit Stack
777Heapsort Overview and Motivation
778Converting an Array into a Max-Heap
779The Heapsort Algorithm Steps
780In-Place Sorting with Heapsort
781Heapsort Time Complexity Analysis
782Heapsort Space Complexity
783Heapsort Stability
784Heapsort vs Quicksort Comparison
785Heapsort vs Mergesort Comparison
786Practical Applications of Heapsort
787Breaking the O(n log n) Barrier
788Counting Sort: Basic Concept
789Counting Sort: Implementation
790Counting Sort: Stability
791Counting Sort: Space-Time Tradeoffs
792Radix Sort: Digit-by-Digit Sorting
793Radix Sort: LSD vs MSD
794Radix Sort: Implementation and Analysis
795Bucket Sort: Partitioning the Range
796Bucket Sort: Implementation
797Bucket Sort: When It Works Best
798Linear-Time Sorting: Practical Considerations
799When to Use Which Sorting Algorithm
800Hybrid Sorting Strategies
801Introsort: The Best of Both Worlds
802Timsort: Python's Default Sorting Algorithm
803Stability in Production Sorting
804In-Place vs Out-of-Place Tradeoffs
805Cache-Friendly Sorting Techniques
806Parallel Sorting Algorithms
807External Sorting for Large Datasets
808Standard Library Sort Functions

← Computer Science

Lesson 772 of 2,872·18. Sorting AlgorithmsPro lesson

Three-Way Partitioning for Duplicate Keys

Handle arrays with many duplicate values efficiently using three-way partitioning into less, equal, greater.

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