C Exercises: Return the counting sort on an array
C Array: Exercise-59 with Solution
Write a program in C to return the counting sort on an array.
Sample Solution:
C Code:
#include <stdio.h>
// Function to perform counting sort on the array
void counting_sort(int arr1[], int n, int max) {
int count[50] = {0}; // Initializing an array to store count of elements
int i, j;
// Counting occurrences of each element in the array
for (i = 0; i < n; ++i)
count[arr1[i]] = count[arr1[i]] + 1;
printf("After sorting the elements in the array are: ");
// Reconstructing the sorted array using count array
for (i = 0; i <= max; ++i) {
for (j = 1; j <= count[i]; ++j) {
printf("%d ", i); // Printing the element based on its count
}
}
}
int main() {
int max = 0; // Initializing max value
int arr1[] = {4, 14, 8, 0, 2, 5, 2, 1, 0, 17, 9, 0, 5};
int n = sizeof(arr1) / sizeof(arr1[0]);
int i;
//------------- print original array ------------------
printf("The given array is : ");
for (i = 0; i < n; i++) {
if (arr1[i] > max)
max = arr1[i]; // Finding maximum element in the array
printf("%d ", arr1[i]);
}
printf("\n");
//------------------------------------------------------
counting_sort(arr1, n, max); // Function call for counting sort
return 0;
}
Sample Output:
The given array is : 4 14 8 0 2 5 2 1 0 17 9 0 5 After sorting the elements in the array are: 0 0 0 1 2 2 4 5 5 8 9 14 17
Flowchart:

C Programming Code Editor:
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