AP CSA Daily Practice
Unit 4 Cycle 2 Day 28: Comprehensive Unit 4 Fin...
AP CSA Unit 4 comprehensive final review. Advanced preparation covering all data collection topics for the AP exam.
Unit 4 Cycle 2 Day 28: Comprehensive Unit 4 Fin...
AP CSA Unit 4 comprehensive final review. Advanced preparation covering all data collection topics for the AP exam.
Unit 4 Cycle 2 Day 27: Comprehensive: Counting ...
AP CSA comprehensive ascending steps practice. Count and analyze increasing sequences in arrays using adjacent comparisons.
Unit 4 Cycle 2 Day 27: Comprehensive: Counting ...
AP CSA comprehensive ascending steps practice. Count and analyze increasing sequences in arrays using adjacent comparisons.
Unit 4 Cycle 2 Day 26: Mixed: 2D Array to Array...
AP CSA 2D array to ArrayList conversion practice. Transform between 2D arrays and lists for flexible data processing.
Unit 4 Cycle 2 Day 26: Mixed: 2D Array to Array...
AP CSA 2D array to ArrayList conversion practice. Transform between 2D arrays and lists for flexible data processing.
Unit 4 Cycle 2 Day 25: 2D Array: Checkerboard P...
AP CSA 2D array checkerboard pattern practice. Generate position-dependent patterns using row and column index arithmetic.
Unit 4 Cycle 2 Day 25: 2D Array: Checkerboard P...
AP CSA 2D array checkerboard pattern practice. Generate position-dependent patterns using row and column index arithmetic.
Unit 4 Cycle 2 Day 24: Array: Consecutive Dupli...
AP CSA consecutive duplicates practice. Detect and process runs of identical adjacent elements in arrays.
Unit 4 Cycle 2 Day 24: Array: Consecutive Dupli...
AP CSA consecutive duplicates practice. Detect and process runs of identical adjacent elements in arrays.
Unit 4 Cycle 2 Day 23: Broken In-Place Reversal
AP CSA broken reversal error spotting practice. Identify common bugs in array reversal algorithms.
Unit 4 Cycle 2 Day 23: Broken In-Place Reversal
AP CSA broken reversal error spotting practice. Identify common bugs in array reversal algorithms.
Unit 4 Cycle 2 Day 22: ArrayList: Type Safety
AP CSA ArrayList type safety practice. Understand generic type parameters and compile-time type checking for lists.
Unit 4 Cycle 2 Day 22: ArrayList: Type Safety
AP CSA ArrayList type safety practice. Understand generic type parameters and compile-time type checking for lists.
Unit 4 Cycle 2 Day 21: 2D Array: Linear Search
AP CSA 2D array linear search practice. Search through 2D arrays for target values using nested loop traversal.
Unit 4 Cycle 2 Day 21: 2D Array: Linear Search
AP CSA 2D array linear search practice. Search through 2D arrays for target values using nested loop traversal.
Unit 4 Cycle 2 Day 20: Array: Merge Two Sorted ...
AP CSA merge two sorted arrays practice. Implement the two-pointer merge technique for combining sorted data.
Unit 4 Cycle 2 Day 20: Array: Merge Two Sorted ...
AP CSA merge two sorted arrays practice. Implement the two-pointer merge technique for combining sorted data.
Unit 4 Cycle 2 Day 19: I/II/III: Search and Sor...
AP CSA I/II/III search and sort properties practice. Evaluate statements about algorithm requirements, efficiency, and behavior.
Unit 4 Cycle 2 Day 19: I/II/III: Search and Sor...
AP CSA I/II/III search and sort properties practice. Evaluate statements about algorithm requirements, efficiency, and behavior.
Unit 4 Cycle 2 Day 18: 2D Array: Matrix Transpose
AP CSA 2D array matrix transpose practice. Swap rows and columns in 2D arrays with correct dimension handling.
Unit 4 Cycle 2 Day 18: 2D Array: Matrix Transpose
AP CSA 2D array matrix transpose practice. Swap rows and columns in 2D arrays with correct dimension handling.
Unit 4 Cycle 2 Day 17: ArrayList: compareTo Sor...
AP CSA ArrayList compareTo sorting practice. Trace sorting algorithms that use compareTo() for element ordering.
Unit 4 Cycle 2 Day 17: ArrayList: compareTo Sor...
AP CSA ArrayList compareTo sorting practice. Trace sorting algorithms that use compareTo() for element ordering.
Unit 4 Cycle 2 Day 16: Array: Frequency Table
AP CSA array frequency table practice. Build count arrays to efficiently track value distributions.
Unit 4 Cycle 2 Day 16: Array: Frequency Table
AP CSA array frequency table practice. Build count arrays to efficiently track value distributions.
Unit 4 Cycle 2 Day 15: 2D Array: Border Elements
AP CSA 2D array border elements practice. Process edge elements of 2D arrays with correct boundary identification.
Unit 4 Cycle 2 Day 15: 2D Array: Border Elements
AP CSA 2D array border elements practice. Process edge elements of 2D arrays with correct boundary identification.
Unit 4 Cycle 2 Day 14: ArrayList: Removing Dupl...
AP CSA ArrayList duplicate removal practice. Implement and trace algorithms that eliminate duplicate elements from lists.
Unit 4 Cycle 2 Day 14: ArrayList: Removing Dupl...
AP CSA ArrayList duplicate removal practice. Implement and trace algorithms that eliminate duplicate elements from lists.
Unit 4 Cycle 2 Day 13: Array: In-Place Reversal
AP CSA in-place array reversal practice. Implement the two-pointer swap pattern for reversing arrays efficiently.
Unit 4 Cycle 2 Day 13: Array: In-Place Reversal
AP CSA in-place array reversal practice. Implement the two-pointer swap pattern for reversing arrays efficiently.
Unit 4 Cycle 2 Day 12: 2D Array: Column Sum
AP CSA 2D array column sum practice. Compute column-based aggregates with properly nested loops.
Unit 4 Cycle 2 Day 12: 2D Array: Column Sum
AP CSA 2D array column sum practice. Compute column-based aggregates with properly nested loops.
Unit 4 Cycle 2 Day 11: I/II/III: ArrayList Oper...
AP CSA I/II/III ArrayList operations practice. Evaluate statements about add, remove, and set behavior with specific examples.
Unit 4 Cycle 2 Day 11: I/II/III: ArrayList Oper...
AP CSA I/II/III ArrayList operations practice. Evaluate statements about add, remove, and set behavior with specific examples.
Unit 4 Cycle 2 Day 10: 2D Array: Main Diagonal
AP CSA 2D array diagonal access practice. Traverse main and secondary diagonals using single-loop patterns.
Unit 4 Cycle 2 Day 10: 2D Array: Main Diagonal
AP CSA 2D array diagonal access practice. Traverse main and secondary diagonals using single-loop patterns.
Unit 4 Cycle 2 Day 9: While Loop Removal Pattern
AP CSA while loop removal pattern practice. Implement safe ArrayList removal using a while loop with conditional increment.
Unit 4 Cycle 2 Day 9: While Loop Removal Pattern
AP CSA while loop removal pattern practice. Implement safe ArrayList removal using a while loop with conditional increment.
Unit 4 Cycle 2 Day 8: Insertion Sort: Worst Cas...
AP CSA insertion sort worst case practice. Count exact comparisons and shifts for specific input orderings.
Unit 4 Cycle 2 Day 8: Insertion Sort: Worst Cas...
AP CSA insertion sort worst case practice. Count exact comparisons and shifts for specific input orderings.
Unit 4 Cycle 2 Day 7: Selection Sort: Two-Pass ...
Advanced AP CSA selection sort two-pass trace practice. Show the complete array state after each pass of selection sort.
Unit 4 Cycle 2 Day 7: Selection Sort: Two-Pass ...
Advanced AP CSA selection sort two-pass trace practice. Show the complete array state after each pass of selection sort.
Unit 4 Cycle 2 Day 6: Binary Search Precondition
AP CSA binary search precondition practice. Understand why binary search requires sorted data and what happens without it.
Unit 4 Cycle 2 Day 6: Binary Search Precondition
AP CSA binary search precondition practice. Understand why binary search requires sorted data and what happens without it.
Unit 4 Cycle 2 Day 5: ConcurrentModification in...
AP CSA ConcurrentModification in enhanced for practice. Identify when enhanced for loops fail during ArrayList modification.
Unit 4 Cycle 2 Day 5: ConcurrentModification in...
AP CSA ConcurrentModification in enhanced for practice. Identify when enhanced for loops fail during ArrayList modification.
Unit 4 Cycle 2 Day 4: ArrayList Integer Removal...
Advanced AP CSA ArrayList Integer removal ambiguity practice. Navigate the index vs value conflict when removing Integers.
Unit 4 Cycle 2 Day 4: ArrayList Integer Removal...
Advanced AP CSA ArrayList Integer removal ambiguity practice. Navigate the index vs value conflict when removing Integers.
Unit 4 Cycle 2 Day 3: Off-by-One: Adjacent Comp...
AP CSA adjacent comparison off-by-one practice. Set correct loop bounds for algorithms that access arr[i+1].
Unit 4 Cycle 2 Day 3: Off-by-One: Adjacent Comp...
AP CSA adjacent comparison off-by-one practice. Set correct loop bounds for algorithms that access arr[i+1].
Unit 4 Cycle 2 Day 2: I/II/III: Array Traversal...
AP CSA I/II/III array traversal patterns practice. Compare different traversal approaches and their capabilities.
Unit 4 Cycle 2 Day 2: I/II/III: Array Traversal...
AP CSA I/II/III array traversal patterns practice. Compare different traversal approaches and their capabilities.
Unit 4 Cycle 2 Day 1: Array Aliasing Trap
AP CSA array aliasing trap practice. Understand when array variables share data versus hold independent copies.
Unit 4 Cycle 2 Day 1: Array Aliasing Trap
AP CSA array aliasing trap practice. Understand when array variables share data versus hold independent copies.
Unit 4 Cycle 1 Day 28: Comprehensive Unit 4 Review
AP CSA Unit 4 comprehensive review practice. Final preparation covering all data collection topics for the AP exam.
Unit 4 Cycle 1 Day 28: Comprehensive Unit 4 Review
AP CSA Unit 4 comprehensive review practice. Final preparation covering all data collection topics for the AP exam.
Unit 4 Cycle 1 Day 27: Mixed Array and Loop Alg...
AP CSA mixed array and loop algorithm practice. Combine array traversal, conditionals, and accumulators in complex algorithms.
Unit 4 Cycle 1 Day 27: Mixed Array and Loop Alg...
AP CSA mixed array and loop algorithm practice. Combine array traversal, conditionals, and accumulators in complex algorithms.
Unit 4 Cycle 1 Day 26: Array vs ArrayList Compa...
AP CSA array vs ArrayList comparison practice. Understand the tradeoffs between fixed arrays and dynamic ArrayLists.
Unit 4 Cycle 1 Day 26: Array vs ArrayList Compa...
AP CSA array vs ArrayList comparison practice. Understand the tradeoffs between fixed arrays and dynamic ArrayLists.
Unit 4 Cycle 1 Day 25: 2D Array: Counting Speci...
AP CSA 2D array counting practice. Count elements that match conditions across an entire 2D grid.
Unit 4 Cycle 1 Day 25: 2D Array: Counting Speci...
AP CSA 2D array counting practice. Count elements that match conditions across an entire 2D grid.
Unit 4 Cycle 1 Day 24: 2D Array Row Sums
AP CSA 2D array row sums practice. Compute aggregates for each row using the nested loop accumulator pattern.
Unit 4 Cycle 1 Day 24: 2D Array Row Sums
AP CSA 2D array row sums practice. Compute aggregates for each row using the nested loop accumulator pattern.
Unit 4 Cycle 1 Day 23: 2D Array Column Traversal
AP CSA 2D array column traversal practice. Process 2D arrays column by column and compare with row-major order.
Unit 4 Cycle 1 Day 23: 2D Array Column Traversal
AP CSA 2D array column traversal practice. Process 2D arrays column by column and compare with row-major order.
Unit 4 Cycle 1 Day 22: 2D Array Row Traversal
AP CSA 2D array row traversal practice. Process 2D arrays row by row using nested loops.
Unit 4 Cycle 1 Day 22: 2D Array Row Traversal
AP CSA 2D array row traversal practice. Process 2D arrays row by row using nested loops.
Unit 4 Cycle 1 Day 21: 2D Array Creation and Ac...
AP CSA 2D array creation and access practice. Master row-column indexing and dimension properties of 2D arrays.
Unit 4 Cycle 1 Day 21: 2D Array Creation and Ac...
AP CSA 2D array creation and access practice. Master row-column indexing and dimension properties of 2D arrays.
Unit 4 Cycle 1 Day 20: Comparing Sorts
AP CSA sorting algorithm comparison practice. Analyze when selection sort vs insertion sort is more efficient.
Unit 4 Cycle 1 Day 20: Comparing Sorts
AP CSA sorting algorithm comparison practice. Analyze when selection sort vs insertion sort is more efficient.
Unit 4 Cycle 1 Day 19: Insertion Sort
AP CSA insertion sort practice. Trace the insert-into-sorted-position algorithm and understand its shifting mechanism.
Unit 4 Cycle 1 Day 19: Insertion Sort
AP CSA insertion sort practice. Trace the insert-into-sorted-position algorithm and understand its shifting mechanism.
Unit 4 Cycle 1 Day 18: Selection Sort
AP CSA selection sort practice. Trace the find-minimum-and-swap algorithm through arrays step by step.
Unit 4 Cycle 1 Day 18: Selection Sort
AP CSA selection sort practice. Trace the find-minimum-and-swap algorithm through arrays step by step.
Unit 4 Cycle 1 Day 17: Binary Search Tracing
AP CSA binary search tracing practice. Trace the halving process on sorted arrays and count comparisons.
Unit 4 Cycle 1 Day 17: Binary Search Tracing
AP CSA binary search tracing practice. Trace the halving process on sorted arrays and count comparisons.
Unit 4 Cycle 1 Day 16: Linear Search
AP CSA linear search practice. Implement and analyze sequential search in arrays and ArrayLists.
Unit 4 Cycle 1 Day 16: Linear Search
AP CSA linear search practice. Implement and analyze sequential search in arrays and ArrayLists.
Unit 4 Cycle 1 Day 15: ArrayList: Forward Remov...
AP CSA ArrayList forward removal bug practice. Identify and fix the classic index-shift error during forward traversal removal.
Unit 4 Cycle 1 Day 15: ArrayList: Forward Remov...
AP CSA ArrayList forward removal bug practice. Identify and fix the classic index-shift error during forward traversal removal.
Unit 4 Cycle 1 Day 14: ArrayList: Building from...
AP CSA array to ArrayList conversion practice. Master translating between fixed arrays and dynamic ArrayLists.
Unit 4 Cycle 1 Day 14: ArrayList: Building from...
AP CSA array to ArrayList conversion practice. Master translating between fixed arrays and dynamic ArrayLists.
Unit 4 Cycle 1 Day 13: ArrayList Traversal and ...
AP CSA ArrayList traversal and removal practice. Avoid the index-shift bug when removing elements during iteration.
Unit 4 Cycle 1 Day 13: ArrayList Traversal and ...
AP CSA ArrayList traversal and removal practice. Avoid the index-shift bug when removing elements during iteration.
Unit 4 Cycle 1 Day 12: ArrayList set() and get()
AP CSA ArrayList set() and get() practice. Master in-place replacement versus insertion behavior in ArrayLists.
Unit 4 Cycle 1 Day 12: ArrayList set() and get()
AP CSA ArrayList set() and get() practice. Master in-place replacement versus insertion behavior in ArrayLists.
Unit 4 Cycle 1 Day 11: ArrayList remove()
AP CSA ArrayList remove() practice. Navigate the Integer removal ambiguity between index-based and value-based removal.
Unit 4 Cycle 1 Day 11: ArrayList remove()
AP CSA ArrayList remove() practice. Navigate the Integer removal ambiguity between index-based and value-based removal.
Unit 4 Cycle 1 Day 10: ArrayList Creation and M...
AP CSA ArrayList creation and methods practice. Master the essential ArrayList operations for the AP exam.
Unit 4 Cycle 1 Day 10: ArrayList Creation and M...
AP CSA ArrayList creation and methods practice. Master the essential ArrayList operations for the AP exam.
Unit 4 Cycle 1 Day 9: Shifting Elements
AP CSA array element shifting practice. Master left and right shift algorithms with correct iteration direction.
Unit 4 Cycle 1 Day 9: Shifting Elements
AP CSA array element shifting practice. Master left and right shift algorithms with correct iteration direction.
Unit 4 Cycle 1 Day 8: Counting Matches
AP CSA counting matches practice. Use the counter accumulator pattern to count elements that satisfy conditions.
Unit 4 Cycle 1 Day 8: Counting Matches
AP CSA counting matches practice. Use the counter accumulator pattern to count elements that satisfy conditions.
Unit 4 Cycle 1 Day 7: Finding Maximum
AP CSA finding maximum practice. Master the running maximum pattern and avoid common initialization mistakes.
Unit 4 Cycle 1 Day 7: Finding Maximum
AP CSA finding maximum practice. Master the running maximum pattern and avoid common initialization mistakes.