Bubble Sort
Bubble sorting is a simple sorting technique in sorting algorithm. In bubble sorting algorithm, we arrange the elements of the list by forming pairs of adjacent elements. It means we repeatedly step through the list which we want to sort, compare two items at a time and swap them if they are not in the right order. Another way to visualize the bubble sort algorithm is as its name, the smaller element bubble to the top. Here is the source code implements bubble sorting algorithm in C which sorts an unordered list of integer.
#include <stdio.h>
#include <stdlib.h>
void swap(int *x,int *y)
{
int temp;
temp = *x;
*x = *y;
*y = temp;
}
void bublesort(int list[], int n)
{
int i,j;
for(i=0;i<(n-1);i++)
for(j=0;j<(n-(i+1));j++)
if(list[j] > list[j+1])
swap(&list[j],&list[j+1]);
}
void printlist(int list[],int n)
{
int i;
for(i=0;i<n;i++)
printf("%d\t",list[i]);
}
void main()
{
const int MAX_ELEMENTS = 10;
int list[MAX_ELEMENTS];
int i = 0;
// generate random numbers and fill them to the list
for(i = 0; i < MAX_ELEMENTS; i++ ){
list[i] = rand();
}
printf("The list before sorting is:\n");
printlist(list,MAX_ELEMENTS);
// sort the list
bublesort(list,MAX_ELEMENTS);
// print the result
printf("The list after sorting using bubble sorting algorithm:\n");
printlist(list,MAX_ELEMENTS);
}