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### Highest rated AI app ### Highest rated AI app ## Quick Sort in C: Efficient Sorting for Optimized Performance

Quick sort, a highly efficient sorting algorithm, stands out due to its divide-and-conquer approach. This article delves into implementing quick sort in C, highlighting its efficiency and optimal performance in sorting data.

## Understanding the Quick Sort Mechanism

Quick sort operates by selecting a ‘pivot’ element from the array and partitioning the other elements into two sub-arrays, according to whether they are less than or greater than the pivot. The sub-arrays are then sorted recursively.

## Implementing Quick Sort in C

The implementation of quick sort in C involves two primary functions: `partition()` and `quickSort()`. Here’s a detailed breakdown:

### The `partition()` Function

```int partition(int arr[], int low, int high) {
int pivot = arr[high];
int i = (low - 1);

for (int j = low; j <= high- 1; j++) {
if (arr[j] < pivot) {
i++;
swap(&arr[i], &arr[j]);
}
}
swap(&arr[i + 1], &arr[high]);
return (i + 1);
}

```

### The `quickSort()` Function

```void quickSort(int arr[], int low, int high) {
if (low < high) {
int pi = partition(arr, low, high);

quickSort(arr, low, pi - 1);
quickSort(arr, pi + 1, high);
}
}

```

### Auxiliary `swap()` Function

```void swap(int* a, int* b) {
int t = *a;
*a = *b;
*b = t;
}

```

## Key Features of Quick Sort

1. Divide and Conquer Strategy: Splits the array and sorts the sub-arrays.
2. In-Place Sorting: Does not require additional space.
3. Time Complexity: Average and best case – O(n log n), worst case – O(n^2).

## Conclusion

Quick sort in C offers a blend of efficiency and speed, making it a go-to choice for sorting large datasets. Understanding and implementing this algorithm enhances your skill set in data structure management and algorithm optimization. #### Anand Das

Anand is Co-founder and CTO of Bito. He leads technical strategy and engineering, and is our biggest user! Formerly, Anand was CTO of Eyeota, a data company acquired by Dun & Bradstreet. He is co-founder of PubMatic, where he led the building of an ad exchange system that handles over 1 Trillion bids per day.