Bucket Sort Algo - c

Question

How can i change code here to work with float values in the array, when I'm trying to compile the code, I got an error
so what I need here is my code can work with float values not just int, If i added an array with int values it works fine but with float values it gives me an error
How can i change code here to work with float values in the array, when I'm trying to compile the code, I got an error
so what I need here is my code can work with float values not just int, If i added an array with int values it works fine but with float values it gives me an error
#include <stdio.h>
#include <stdlib.h>
#define NARRAY 100 // Array size
#define NBUCKET 100 // Number of buckets
#define INTERVAL 100 // Each bucket capacity
struct Node {
int data;
struct Node *next;
};
void BucketSort(int arr[]);
struct Node *InsertionSort(struct Node *list);
void print(int arr[]);
void printBuckets(struct Node *list);
int getBucketIndex(int value);
// Sorting function
void BucketSort(int arr[]) {
int i, j;
struct Node **buckets;
// Create buckets and allocate memory size
buckets = (struct Node **)malloc(sizeof(struct Node *) * NBUCKET);
// Initialize empty buckets
for (i = 0; i < NBUCKET; ++i) {
buckets[i] = NULL;
}
// Fill the buckets with respective elements
for (i = 0; i < NARRAY; ++i) {
struct Node *current;
int pos = getBucketIndex(arr[i]);
current = (struct Node *)malloc(sizeof(struct Node));
current->data = arr[i];
current->next = buckets[pos];
buckets[pos] = current;
}
// Print the buckets along with their elements
for (i = 0; i < NBUCKET; i++) {
printf("Bucket[%d]: ", i);
printBuckets(buckets[i]);
printf("\n");
}
// Sort the elements of each bucket
for (i = 0; i < NBUCKET; ++i) {
buckets[i] = InsertionSort(buckets[i]);
}
printf("-------------\n");
printf("Bucktets after sorting\n");
for (i = 0; i < NBUCKET; i++) {
printf("Bucket[%d]: ", i);
printBuckets(buckets[i]);
printf("\n");
}
// Put sorted elements on arr
for (j = 0, i = 0; i < NBUCKET; ++i) {
struct Node *node;
node = buckets[i];
while (node) {
arr[j++] = node->data;
node = node->next;
}
}
return;
}
// Function to sort the elements of each bucket
struct Node *InsertionSort(struct Node *list) {
struct Node *k, *nodeList;
if (list == 0 || list->next == 0) {
return list;
}
nodeList = list;
k = list->next;
nodeList->next = 0;
while (k != 0) {
struct Node *ptr;
if (nodeList->data > k->data) {
struct Node *tmp;
tmp = k;
k = k->next;
tmp->next = nodeList;
nodeList = tmp;
continue;
}
for (ptr = nodeList; ptr->next != 0; ptr = ptr->next) {
if (ptr->next->data > k->data)
break;
}
if (ptr->next != 0) {
struct Node *tmp;
tmp = k;
k = k->next;
tmp->next = ptr->next;
ptr->next = tmp;
continue;
} else {
ptr->next = k;
k = k->next;
ptr->next->next = 0;
continue;
}
}
return nodeList;
}
int getBucketIndex(int value) {
return value / INTERVAL;
}
void print(int ar[]) {
int i;
for (i = 0; i < NARRAY; ++i) {
printf("%d ", ar[i]);
}
printf("\n");
}
// Print buckets
void printBuckets(struct Node *list) {
struct Node *cur = list;
while (cur) {
printf("%d ", cur->data);
cur = cur->next;
}
}
// Driver code
int main(void) {
int array[NARRAY] = {0.50, 100.00, 99.97, 51.20, 53.90, 28.10, 25.50, 66.40, 65.70, 0.00};
printf("Initial array: ");
print(array);
printf("-------------\n");
BucketSort(array);
printf("-------------\n");
printf("Sorted array: ");
print(array);
return 0;
}

Answer 1

Use this code. I've made my own datatype iORf. Use typedef int iORf and typedef float iORf for int and float respectively. You have to switch manually for this.
#include <stdio.h>
#include <stdlib.h>
#define NARRAY 100 // Array size
#define NBUCKET 100 // Number of buckets
#define INTERVAL 100 // Each bucket capacity
typedef int iORf; //float or int, currently int
struct Node
{
iORf data;
struct Node *next;
};
void BucketSort(iORf arr[]);
struct Node *InsertionSort(struct Node *list);
void print(iORf arr[]);
void printBuckets(struct Node *list);
int getBucketIndex(iORf value);
// Sorting function
void BucketSort(iORf arr[])
{
int i, j;
struct Node **buckets;
// Create buckets and allocate memory size
buckets = (struct Node **)malloc(sizeof(struct Node *) * NBUCKET);
// Initialize empty buckets
for (i = 0; i < NBUCKET; ++i)
{
buckets[i] = NULL;
}
// Fill the buckets with respective elements
for (i = 0; i < NARRAY; ++i)
{
struct Node *current;
int pos = getBucketIndex(arr[i]);
current = (struct Node *)malloc(sizeof(struct Node));
current->data = arr[i];
current->next = buckets[pos];
buckets[pos] = current;
}
// Print the buckets along with their elements
for (i = 0; i < NBUCKET; i++)
{
printf("Bucket[%d]: ", i);
printBuckets(buckets[i]);
printf("\n");
}
// Sort the elements of each bucket
for (i = 0; i < NBUCKET; ++i)
{
buckets[i] = InsertionSort(buckets[i]);
}
printf("-------------\n");
printf("Bucktets after sorting\n");
for (i = 0; i < NBUCKET; i++)
{
printf("Bucket[%d]: ", i);
printBuckets(buckets[i]);
printf("\n");
}
// Put sorted elements on arr
for (j = 0, i = 0; i < NBUCKET; ++i)
{
struct Node *node;
node = buckets[i];
while (node)
{
arr[j++] = node->data;
node = node->next;
}
}
return;
}
// Function to sort the elements of each bucket
struct Node *InsertionSort(struct Node *list)
{
struct Node *k, *nodeList;
if (list == 0 || list->next == 0)
{
return list;
}
nodeList = list;
k = list->next;
nodeList->next = 0;
while (k != 0)
{
struct Node *ptr;
if (nodeList->data > k->data)
{
struct Node *tmp;
tmp = k;
k = k->next;
tmp->next = nodeList;
nodeList = tmp;
continue;
}
for (ptr = nodeList; ptr->next != 0; ptr = ptr->next)
{
if (ptr->next->data > k->data)
break;
}
if (ptr->next != 0)
{
struct Node *tmp;
tmp = k;
k = k->next;
tmp->next = ptr->next;
ptr->next = tmp;
continue;
}
else
{
ptr->next = k;
k = k->next;
ptr->next->next = 0;
continue;
}
}
return nodeList;
}
int getBucketIndex(iORf value)
{
return (int)value / INTERVAL;
}
void print(iORf ar[])
{
int i;
int flag = 0;
iORf dummy = 1.5;
if (dummy > 1)
flag++;
for (i = 0; i < NARRAY; ++i)
{
if (flag > 0)
printf("%f ", ar[i]);
else
printf("%d ", ar[i]);
}
printf("\n");
}
// Print buckets
void printBuckets(struct Node *list)
{
struct Node *cur = list;
while (cur)
{
printf("%d ", cur->data);
cur = cur->next;
}
}
// Driver code
int main(void)
{
iORf array[NARRAY] = {0.5, 100.00, 99.97, 51.20, 53.90, 28.10, 25.50, 66.40, 65.70, 0.00};
printf("Initial array: ");
print(array);
printf("-------------\n");
BucketSort(array);
printf("-------------\n");
printf("Sorted array: ");
print(array);
return 0;
}