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Home/PL/HW/Tests/hw3.c

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+#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;
+}