C program for Comb Sort Algorithm | C code champ

C program for Comb Sort Algorithm | C code champ


C program for Comb Sort Algorithm : Combo sort is an sorting algorithm. It is an efficient variation of bubble sort that eliminates “turtles”, the small values near the end of the list and makes use of gaps between values.

How the Combo sort algorithm works :

In comb sort, using Gaps properly is the main part . For example, in bubble sort the gap between two elements was 1 while here the gap starts out as a large value and shrinks until it reaches the value 1, when it practically becomes bubble sort. The shrink factor determines how much the gap is lessened. The value is crucial, so an ideal value would be 13.

So how to achieve the same using C logic. Lets first see how our code going to work. At first, we will calculate the size of the gap, based on the number of elements to be sorted. The Comb sort method is the one who sorts the from the array, at first with the highest gap, which is calculated by calling the Gap logic, then it will pass through the array and checks the proper elements if they are in the right order, and if not, then we will swap the values. This continues until the gap reaches the value 1 and no more swaps have been executed. Now lets see .

C program of Comb Sort Algorithm :

int newGap(int gap) {
  gap = (gap * 10) / 13;
  if (gap == 9 || gap == 10)
    gap = 11;
  if (gap < 1)
    gap = 1;
  return gap;
void combsort(int a[], int aSize) {
  int gap = aSize;
  for (;;) {
    gap = newGap(gap);
    bool swapped = false;
    for (int i = 0; i < aSize - gap; i++) {
      int j = i + gap;
      if (a[i] > a[j]) {
        int temp=a[i];
           a[i]=a[i + gap];
           a[i + gap]=temp;
        swapped = true;
    if (gap == 1 && !swapped)
int main ()
        int n;
        int *a;
        printf("----------------------Made by C code champ-----------------\n");
        printf("\t\t\tCOMB SORT\n\n\n\n");
        printf("Please insert the number of elements to be sorted: ");
        scanf("%d",&n);       // The total number of elements
        a = (int *)calloc(n, sizeof(int));
        for(int i=0;i< n;i++)

                printf("Input %d element: ",i);
                scanf("%d",&a[i]); // Adding the elements to the array
        printf("\n\n\nUnsorted list:\n");       // Displaying the unsorted array
        for(int i=0;i< n;i++)
        printf("\n\n\nSorted list:\n");        // Display the sorted array
        for(int i=0;i < n;i++)
        return 0;

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