﻿ C Program: Return the counting sort on an array - w3resource

# 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 = {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);
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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