Bully Algorithm

Bully Algorithm

The bully algorithm is used for selecting a coordinator in a distributed system. We can easily find that a new coordinator process has been restarted at the same point of failure. The bully algorithm is a type of Election algorithm which is mainly used for choosing a coordinate. In a distributed system, we need some election algorithms such as bully and ring to get a coordinator that performs functions needed by other processes.

What is Bully Algorithm in C?

Bully in C is a typical C program, which reads input from standard input, and displays the result on standard output. This program allows a user to input data from the keyboard and keeps reading the input until the user enters the stop character, which is ‘Q’ by default. This program stores these input data in the temporary memory until the user enters the stop character. The program allows input characters from the user until the user enters the stop character. The code displays the data in reverse order. The program displays the message for the user, if

An election algorithm is used to select the coordinator process from the processes in a distributed system. The coordinator process plays the role of a communication bridge between the processes in a distributed system. Coordinators are selected in the distributed system for various purposes, for example in the case of a distributed file system and election algorithms are used to select the coordinator process.

Code of Bully Algorithm

A Bully is a special type of challenging problem in a programming language. The point of this blog is to show how Bully in c programming by creating a simple program but with a problem. A Bully is a kind of problem that makes a lot of problems in a program.

#include < stdio.h > #include < conio.h > #include < stdlib.h >

int random_number(int min_num, int max_num) {

int result = 0, low_num = 0, hi_num = 0;

if (min_num < max_num) {

low_num = min_num;

hi_num = max_num + 1; // include max_num in output

} else {

low_num = max_num + 1; // include max_num in output

hi_num = min_num;

}

srand(time(NULL));

result = (rand() % (hi_num – low_num)) + low_num;

return result;

}

void main() {

int a[10], n, i, x, u, b[10], m = 0;

printf(“Enter The number of nodes”);

scanf(“%d”, & n);

for (i = 0; i < n; i++) {

printf(“Enter state of node %d (0=dead/1=alive): “, i + 1);

scanf(“%d”, & a[i]);

}

printf(“List of alive Nodes:”);

for (i = 0; i < n; i++) {

if (a[i] > 0) {

b[m] = i;

printf(“%d “, b[m] + 1);

m++;

}

}

printf(“\nEnter the node that didn’t get the reply from the above nodes:”);

scanf(“%d”, & x);

for (i = 0; i < m; i++) {

if (x – 1 == b[i]) {

x = i;

break;

}

}

while (x != m – 1) {

printf(“Broadcasting Election message from %d to: “, b[x] + 1);

for (i = b[x] + 2; i < n + 1; i++) {

printf(“%d “, i);

}

x = random_number(x + 1, m – 1);

printf(“\nNew node is %d with fastest response\”I’m alive\”\n”, b[x] + 1);

50.

}

printf(“Broadcasting Election message from %d to: “, b[x] + 1);

for (i = b[x] + 2; i < n + 1; i++) {

printf(“%d “, i);

}

printf(“\nNo Message Returned\nNode %d is Declaring itself as the co-ordinator”, b[x] + 1);

getch();

}

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