100 Patterns

DSA Topics

Learn each algorithm / pattern name first — then solve problems.

  1. 7.Two Pointers
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  2. 8.Sliding Window
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  3. 9.Prefix Sum
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  4. 10.Difference Array
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  1. 11.Sorting
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  2. 12.Binary Search
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  3. 13.Binary Search on Answer
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  1. 14.Matrix Traversal
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  2. 15.Linked List
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  3. 16.Fast & Slow Pointers
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  4. 17.Stack
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  5. 18.Monotonic Stack
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  6. 19.Queue
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  7. 20.Deque
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  8. 21.Monotonic Queue
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  1. 22.Recursion
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  2. 23.Backtracking
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  3. 24.Subsets / Power Set
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  4. 25.Permutations
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  5. 26.Combinations
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  1. 27.Divide and Conquer
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  2. 28.Merge Sort
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  3. 29.Quick Sort
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  1. 30.Heap / Priority Queue
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  2. 31.Top K Elements
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  3. 32.Intervals
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  4. 33.Merge Intervals
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  1. 34.Greedy Algorithms
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  2. 35.Kadane's Algorithm
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  3. 36.Bit Manipulation
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  4. 37.XOR Tricks
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