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

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

void selectionSort(int arr[], int n, int* comparisons, int* swaps) {
    int i, j, min_idx;

    for (i = 0; i < n - 1; i++) {
        min_idx = i;
        for (j = i + 1; j < n; j++) {
            (*comparisons)++;
            if (arr[j] < arr[min_idx])
                min_idx = j;
        }

        if (min_idx != i) {
            (*swaps)++;
            swap(&arr[min_idx], &arr[i]);
        }
    }
}

void insertionSort(int arr[], int n, int* comparisons, int* swaps) {
    int i, key, j;

    for (i = 1; i < n; i++) {
        key = arr[i];
        j = i - 1;

        while (j >= 0 && arr[j] > key) {
            (*comparisons)++;
            (*swaps)++;
            arr[j + 1] = arr[j];
            j = j - 1;
        }

        arr[j + 1] = key;
    }
}

void printArray(int arr[], int n) {
    int i;
    for (i = 0; i < n; i++)
        printf("%d ", arr[i]);
    printf("\n");
}

void writeFile(int arr[], int n, const char* filename) {
    FILE* file = fopen(filename, "w");
    if (file == NULL) {
        printf("Error opening file!\n");
        exit(1);
    }

    int i;
    for (i = 0; i < n; i++)
        fprintf(file, "%d\n", arr[i]);

    fclose(file);
}

int main() {
    const char* inputFileName = "input.txt";
    const char* outputFileName = "output.txt";
    const int MAX_SAMPLES = 100000;

    // Generate random input samples and write them to a file
    FILE* inputFile = fopen(inputFileName, "w");
    if (inputFile == NULL) {
        printf("Error opening input file!\n");
        return 1;
    }

    srand(time(NULL));
    int i;
    for (i = 0; i < MAX_SAMPLES; i++)
        fprintf(inputFile, "%d\n", rand() % 20000 - 10000);

    fclose(inputFile);

    // Read input samples from the file
    FILE* file = fopen(inputFileName, "r");
    if (file == NULL) {
        printf("Error opening input file!\n");
        return 1;
    }

    int arr[MAX_SAMPLES];
    for (i = 0; i < MAX_SAMPLES; i++)
        fscanf(file, "%d", &arr[i]);

    fclose(file);

    // Perform selection sort
    int comparisons = 0, swaps = 0;
    clock_t start = clock();
    selectionSort(arr, MAX_SAMPLES, &comparisons, &swaps);
    clock_t end = clock();
    double time_taken = ((double)(end - start)) / CLOCKS_PER_SEC;

    printf("Selection Sort:\n");
    printf("Comparisons: %d\n", comparisons);
    printf("Swaps: %d\n", swaps);
    printf("Time Complexity: %f seconds\n", time_taken);

    // Write sorted data to output file
    writeFile(arr, MAX_SAMPLES, outputFileName);

    // Perform insertion sort
    comparisons = 0;
    swaps = 0;
    start = clock();
    insertionSort(arr, MAX_SAMPLES, &comparisons, &swaps);
    end = clock();
    time_taken = ((double)(end - start)) / CLOCKS_PER_SEC;

    printf("\nInsertion Sort:\n");
    printf("Comparisons: %d\n", comparisons);
    printf("Swaps: %d\n", swaps);
    printf("Time Complexity: %f seconds\n", time_taken);

    // Write sorted data to output file
    writeFile(arr, MAX_SAMPLES, outputFileName);

    return 0;
}