selection sort P1

 #include <stdio.h>

#include <stdlib.h>

#include <time.h>


// Function to perform Selection Sort

void selectionSort(int arr[], int n) {

    int i, j, minIndex, temp;

    for (i = 0; i < n - 1; i++) {

        minIndex = i;

        for (j = i + 1; j < n; j++) {

            if (arr[j] < arr[minIndex]) {

                minIndex = j;

            }

        }

        // Swap the found minimum element with the first element

        temp = arr[minIndex];

        arr[minIndex] = arr[i];

        arr[i] = temp;

    }

}


int main() {

    int n, i;

    clock_t start, end;

    double cpu_time_used;


    printf("Enter the number of elements (n): ");

    scanf("%d", &n);


    if (n < 5000) {

        printf("Please enter a value of n greater than 5000.\n");

        return 1;

    }


    int *arr = (int *)malloc(n * sizeof(int));

    if (arr == NULL) {

        printf("Memory allocation failed.\n");

        return 1;

    }


    // Generate n random numbers

    srand(time(NULL));

    for (i = 0; i < n; i++) {

        arr[i] = rand() % 10000; // Generating random numbers between 0 to 9999

    }


    // Record the starting time

    start = clock();


    // Perform Selection Sort

    selectionSort(arr, n);


    // Record the ending time

    end = clock();


    // Calculate the time taken

    cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;


    printf("Time taken for sorting: %lf seconds\n", cpu_time_used);


    free(arr); // Free dynamically allocated memory

    return 0;

}


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