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📄 Templates

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• 2-Way-Partitioning
• Binary Search on Odd and Even range
• Cyclic-sort-and-placement
• Factorials and Inverse Factorials Calc.
• Heap-Lazy-Deletion-(Decrease-Key)
• KMP-string-matching
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🎲Check these Out !

• Sorted Containers (must see) - Sorted Containers in Python

• How memory (Stack, Heap,..) is allocated - Python Memory Model for DSA & Interviews

• Turning into Tail Recursive Procedures - How to convert to 'Tail Recursive Procedures'

• Basic Recursion Problems (complexities + recurrence relations) - Basic Problems Using Simple Recursion

• Basic array problems - Basic Array Problems

• Kadane's subarray variations - Maximum Subarray — Important Interview Variations

• K-way merge problems - K-way Merge

• Binary Search on Answer Pattern - Binary Search on Answer ( Predicate Search) - 5⭐

• Arrays as functional graphs (Floyd's cycle + Others) - Arrays as Functional Graphs

• Complementary Counting (atleast, atmost, pick from both ends) star⭐ - Complementary Counting

• Sorting Patterns -

  • Divide & Conquer merge strategy - Merge Sort (Divide & Conquer)
  • Quickselect ($O(n)$) position finding - QuickSelect
    • 3 way partitioning - 3-Way Partitioning (Dutch National Flag)
  • All Heaps concept - Heaps Concept (Sorting , Operations etc.)
  • Cycle Sort - Cycle Sort (with duplicates)
    • Disjoint Cycle Theorem
  • Radix Sort - Radix Sort
  • Bucket Sort - Bucket Sort
  • Intervals pattern ⭐ - Intervals & Ranges Pattern (Sorting)

• Matrices

  • Master note - Matrices Everywhere !!!
  • Compressing patterns - Row or Col compression in matrix

• Queue

  • Monotonic Deque

• DP

  • What makes a problem DP