prog.l_ada/OldHome/PL/HW/Tests/hw3.c

#include <stdio.h>
#include <stdlib.h>

#define N 20

void selectionSort(int arr[], int n)
{
    int i, j, tmp;
    for (i = 0; i < n - 1; i++)
    {
        for (j = i + 1; j < n; j++)
        {
            if (arr[j] < arr[i])
            {
                tmp = arr[i];
                arr[i] = arr[j];
                arr[j] = tmp;
            }
        }
    }
}

void bubbleSort(int arr[], int n)
{
    int i, j, tmp;
    for (i = 0; i < n; i++)
    {
        for (j = 0; j < n - 1; j++)
        {
            if (arr[j] > arr[j + 1])
            {
                tmp = arr[j];
                arr[j] = arr[j + 1];
                arr[j + 1] = tmp;
            }
        }
    }
}

void insertionSort(int arr[], int n)
{
    int i, j, tmp;
    for (i = 1; i < n; i++)
    {
        for (j = 0; j < i; j++)
        {
            if (arr[i] < arr[j])
            {
                tmp = arr[i];
                arr[i] = arr[j];
                arr[j] = tmp;
            }
        }
    }
}

int main(int argc, char *argv[])
{
    srand(time(0));

    int *arr1 = malloc(sizeof(int) * N);
    int *arr2 = malloc(sizeof(int) * N);
    int *arr3 = malloc(sizeof(int) * N);

    if (!arr1 || !arr2 || !arr3)
    {
        printf("could not malloc\n");
        exit(1);
    }

    int i;
    for (i = 0; i < N; i++)
    {
        int d = rand() % 100;
        arr1[i] = d;
        arr2[i] = d;
        arr3[i] = d;
    }

    selectionSort(arr1, N);
    insertionSort(arr2, N);
    bubbleSort(arr3, N);

    printf("Selection sort: ");
    for (i = 0; i < N; i++)
        printf("%d ", arr1[i]);

    printf("\nInsertion sort: ");
    for (i = 0; i < N; i++)
        printf("%d ", arr2[i]);

    printf("\nBubble sort:    ");
    for (i = 0; i < N; i++)
        printf("%d ", arr3[i]);

    printf("\n");

    free(arr1);
    free(arr2);
    free(arr3);

    return 0;
}