In standard 0/1 knapsack problems, the objective is often to determine the number of ways to fill a specific capacity by adding items. However, challlenges arise when we need to compute the number of valid combinations after excluding a specific item from an already calculated set. Let $F[j]$ repres...
Variables with const When applied to variables, the const qualifier prevents modification after initialization. const int MAX_SIZE = 100; MAX_SIZE = 200; // Compilation error Function Parameters Using const with function parameters ensures the arguemnts remain unmodified within the function scope. v...
Confusing & and *: Inverse Operations The unary operator & fetches the memory address of a variable, while * dereferences an address to access its stored value. They act as inverse operations. int val = 10; int* ptr; ptr = &val; std::cout << *ptr; // prints 10 Here, &val yields...
The Observer pattern is a behavioral design pattern that establishes a one-to-many dependency relationship between objects. When the state of one object changes, all dependent objects are automatically notified and updated. This pattern is particularly useful in scenarios where multiple objects need...
Header File #ifndef CHESSBOARDWIDGET_H #define CHESSBOARDWIDGET_H #include <QWidget> #include <QPainter> QT_BEGIN_NAMESPACE namespace Ui { class ChessBoardWidget; } QT_END_NAMESPACE class ChessBoardWidget : public QWidget { Q_OBJECT public: explicit ChessBoardWidget(QWidget *parent = nul...
Basic Definition An inline function is defined similarly to regular functions, with the addition of the inline keyword before the function signature. inline void logMessage(const char* msg) { std::cout << msg; } Why Use Inline Functions Original Purpose: To replace certain #define macro defini...
Direct Insertion Sort This algorithm treats the first element of the input array as a pre-sorted subarray. Starting from the second element, each value is compared against elements in the pre-sorted section and placed in its appropriate ordered position. It has an average and worst-case time complex...
The selection of boundary conventions dictates loop termination conditions, pointer arithmetic, and overall robustness in divide-and-conquer search routines. Understanding how to model the search window is essential for avoiding infinite loops and index-out-of-bounds exceptions. Mathematical Interva...
Functinoal Requirements Supports storage of both primitive built-in data types and user-defined custom types All underlying element storage is allocated on the heap Constructor accepts a integer parameter to define the initial array capacity Implements custom copy constructor and copy assignment ope...
C++ encludes a variety of data types, each with specific memory requirements and use cases. The table below summarizes common data types, their byte sizes, and descriptions. Data Type Bytes Description char 1 Stores a single character, typically 8 bits. signed char 1 Signed version of char, represen...