## INDEX

### BUBBLE SORT USING C PROGRAM

Source code of simple bubble sort implementation using array ascending order in c programming language

#include<stdio.h>
int main(){

int s,temp,i,j,a[20];

printf("Enter total numbers of elements: ");
scanf("%d",&s);

printf("Enter %d elements: ",s);
for(i=0;i<s;i++)
scanf("%d",&a[i]);

//Bubble sorting algorithm
for(i=s-2;i>=0;i--){
for(j=0;j<=i;j++){
if(a[j]>a[j+1]){
temp=a[j];
a[j]=a[j+1];
a[j+1]=temp;
}
}
}

printf("After sorting: ");
for(i=0;i<s;i++)
printf(" %d",a[i]);

return 0;
}

Output:
Enter total numbers of elements: 5
Enter 5 elements: 6 2 0 11 9
After sorting:  0 2 6 9 11

5. Write a c program for heap sort.
7. Write a c program for shell sort.

#### 34 comments:

Suryanil said...

If i wud write the loop as
for(i=0 to <s)
{ for(j=0 to<s-i)
{ j=i +1;
swap(a[j],a[j+1]);
}
)
den wud it give desired result?

Aditi said...

yes it would give the desired result, but it will also increase the number of comparisons.
run your code with an example and the given code with the same example, you'll see the difference

France Uru said...

Great tutorial
Tanx :)

Nimish David Mathew said...

Why this is used?

for(i=s-2;

Anonymous said...

s-2 is the second last element of d array ... and we are checking it out with j+1. that's why we have used s-2

Anonymous said...

but the first loop start at the end of the array, if you say s-2 how you will reach the last element in taht array

Anonymous said...

in assending or desssinding order???

ambika prasad tripathi said...

can you explain me this program in details?

sandeep kumar said...

yeah absolutely right how to do for last element

Anonymous said...

Can u tell me the time complexity for the program "Bubble sort using c program"???

amit bhardwaj said...

this code is wrong ...atleast write exact code :(
Use for(i=0;i<s-1;i++)
{
for(j=0;j<s-i-1;j+)

Vinodhini Sivakumar said...

i cant understand this s-2 and j+1.. could u pls explain me

Mani Krishna Neelam said...

can u explain me the algorithm of this bubble sort

RAJESH JAIN said...

hi ,what u want to ask in this prog,i can explain if you are interested..

shikazu c said...

this program is using arrays... what can i do for a bubble sort program using functions??

shikazu c said...

hey,.. this program is using array,.. what can i do to use bubblesort using functions..???

Anonymous said...

no i think

LoveRushAM said...

It remains same Big O(n^2)..U can run the program for 30 elements with a loop Counter to get a clear idea..Below 30 results will be confusing

LoveRushAM said...

i=s-2 marks the second last element and when j+1 reaches to i it checks the next value(last value) in array so that gets compared too..

Anonymous said...

hi can u explain me the details of this code. I'm very interested in programming.I ll be very pleased if u help me !!

Anonymous said...

for those who don't understand s-2 concept, here it is. The total no. of elements is stored in variable S (let S=5). But in array the first element is stored in position a[0]. Hence the last element (i.e. 5th element) is stored in a[4]. Now i=S-2 ==> i=a[3].. Then if j<=i, then when j becomes equal to i (i.e. a[3]), the term j+1=[4] (i.e. the last term.

Rekha Gunasekar said...

i cant understand the loop hre

Rekha Gunasekar said...

ya i too have the dougt abt the same

Shivam Bandejia said...

Can u please explain how would it give the result that too when there is no use of if condition made?

Sanjib Barma said...
This comment has been removed by the author.
Sanjib Barma said...
This comment has been removed by the author.
manisha mani said...

how to display my output by showing my each iteration process..???

Maria Hashmi said...

understand the whole program plzzzz

Shihab Mriza said...

Easy to understand. ...

Raghu Praveen said...

how to generate floyd triangle using while and if in c

Raghu Praveen said...

please reply fastly

ashok chavan said...

become a contributor of ISeenLab and help us to educate our friends globally

Rish Joshi said...

plz explain d full logic

Mohit Makhija said...

See my solution for bubble sort in c++, python and java
http://code2begin.blogspot.com/2016/12/bubble-sort-algorithm.html