Merge Sort in C – Algorithm, Program, and Complexity

Merge sort in C is a classic divide-and-conquer sorting algorithm that guarantees O(n log n) time in all cases. It splits an array into halves, recursively sorts each half, then merges the sorted halves back together. Unlike bubble sort or insertion sort, merge sort never degrades to O(n²) — making it the preferred choice when …

Generate Random Numbers in C – rand() and srand() Explained

This C program to generate random numbers uses the standard library functions rand() and srand(). rand() returns a pseudo-random integer between 0 and RAND_MAX (at least 32767). “Pseudo-random” means the sequence is determined by a starting value called the seed. Seeding with time(NULL) ensures a different sequence every time the program runs. Key Functions Function …

2’s Complement of a Binary Number in C

The 2’s complement of a binary number in C is the way modern computers represent negative integers. In an 8-bit system, +5 is stored as 00000101 and −5 is stored as 11111011 (the 2’s complement of 00000101). Using 2’s complement, subtraction becomes ordinary addition and there is only one representation of zero — which is …

C program to insert a sub-string in to given main string from a given position.

C Strings:C Program to insert a sub-string in to given main string from a given position. In this program we read two strings and replace the second string in the given position of the first string.Read more about C Programming Language . /************************************************************ You can use all the programs on www.c-program-example.com* for personal and learning …

C program to find the distance traveled at regular intervals of time given .

C program to find the distance traveled at regular intervals of time given the values of ‘u’ and ‘a’. The program should provide the flexibility to the user to select his own time intervals and repeat the calculations for different values of ‘u’ and ‘a’. Read more about C Programming Language . /************************************************************ You can …

C Program to Implement Heap Sort — Algorithm, Tree Visualization, and Complexity

Heap Sort is a comparison-based sorting algorithm that uses a binary heap data structure. Its standout property: it is guaranteed O(n log n) in all cases — best, average, and worst — while using only O(1) extra memory. No Quick Sort worst-case surprises, no Merge Sort extra array. Key Concept — The Max-Heap A max-heap …