Heap Sort Implementation and Optimization in C
Overview of Heap Sort
Heap sort is a powerful comparison-based sorting algorithm that leverages the properties of a binary heap data structure. It offers a time complexity of O(n log n), making it suitable for sorting large datasets. Unlike some other sorting algorithms, heap sort is in-place and has consistent performance across best, average, ...
Posted on Sat, 27 Jun 2026 17:28:28 +0000 by emediastudios
Finding Public Favorites Based on Asymmetric Distance Relationships
Intimacy between people can be quantified by an inverse relationship with perceived distance. Importantly, this distance perception is asymmetric and directional. For instance, person A might perceive a distance of 1 to person B, while B perceives a distance of 100000 to A. Additionally, distance relationships are transitive: if person A consid ...
Posted on Sat, 27 Jun 2026 17:09:24 +0000 by mbarmawi
Implementation of a Doubly Circular Linked List with Head Node
Funtcion Interface Definition
typedef int ElementType;
typedef struct _dnode {
ElementType value;
struct _dnode *previous;
struct _dnode *next;
} DNode;
typedef DNode* DList;
DList initializeList();
void appendNode(DList list, ElementType value);
bool isEmpty(DList list);
void forwardTraverse(DList list);
void backwardTraverse(DL ...
Posted on Sat, 27 Jun 2026 17:00:30 +0000 by m00ch0
Evaluating Multiplier Constants in Polynomial String Hash Functions
The standard hash computation for character sequences in Java relies on a polynomial rolling hash function. The core implementation multiplies the accumulated hash value by a constant factor before adding the next character code.
public static int computeStringHash(char[] data) {
int result = 0;
for (char c : data) {
result = 31 ...
Posted on Fri, 26 Jun 2026 17:18:50 +0000 by CowbellMaster
Implementing Bloom Filters and Hash Function Applications
Bloom Filter Implementation
Fundamentals of Bloom Filters
Scenario: An unsafe webpage blacklist contains 100 billion URLs, each occupying up to 64 bytes. Design a filtering system to check if a URL exists in the blacklist.
Requirements:
1) Allow false positive rate below 0.01%
2) Additional space must not exceed 30GB (≈30×10^9 bytes)
Analysis ...
Posted on Wed, 24 Jun 2026 17:07:19 +0000 by BrandonK
Binary Search Patterns: Solving Common LeetCode Array Problems
Binary search is a fundamental algorithm that efficiently locates target values in sorted arrays. This article explores several classic LeetCode problems that leverage binary search, along with related array manipulation techniques.
Problem 704: Binary Search
When performing binary search on a sorted array, the choice of boundary conditions sig ...
Posted on Wed, 24 Jun 2026 16:35:07 +0000 by Lefu
Implementing a Contact Directory Using Sequential Lists
Building upon an existing sequential list implementation, we can create a comprehensive contact directory system. This system typically requires operations such as adding contacts, removing entries, searching for specific inidviduals, updating information, viewing all records, and exiting the application.
Header File Definition
First, create a ...
Posted on Sun, 21 Jun 2026 17:55:23 +0000 by MaxBodine
Linked List Operations: Swapping Nodes, Removing Nth Node, Finding Intersections, and Detecting Cycles
Pairwise Node Swapping
To swap adjacent nodes in pairs, we utilize a dummy node to simplify edge cases. The core idea involves manipulating pointers to reverse each pair while maintaining proper linkage with the rest of the list. A cursor pointer tracks the predecessor of each pair being processed.
The termination condition varies based on whet ...
Posted on Sat, 20 Jun 2026 16:35:52 +0000 by matt6805
Programming Competition Problem Solutions and Analysis
Mathematical Caclulation Problem
Given the formula for distance between a point and a line, we can simpliyf the calculation to |x-y| * 50:
#include <iostream>
#include <cmath>
int main() {
int x, y;
std::cin >> x >> y;
std::cout << abs(y - x) * 50 << '\n';
return 0;
}
String Output Problem
S ...
Posted on Fri, 19 Jun 2026 18:14:18 +0000 by jantheman
Merge Sort Implementation for Singly Linked Lists
Algorithm Overview
Split: Use slow-fast pointer technique to locate the midpoint and partition the list into two halves.
Recurse: Apply the same sorting procedure recursively on both halves.
Merge: Combine the two sorted sublists into a single sorted list using a linear-time merge step.
Implementation
class ListNode {
int value;
ListN ...
Posted on Fri, 19 Jun 2026 17:24:15 +0000 by brainstem