feat: Initial commit

Laboratorio 3/Esercizio 1/main.c

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+// Laboratorio 3 - Esercizio 1
+// Matteo Schiff - s295565
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int majority(int * a, int N) {
+    if (N == 1) {
+        return a[0];
+    }
+
+    int m = N/2;
+
+    int x = majority(a, m);
+    int y = majority(a+m, m);
+
+    if (x == y)
+        return x;
+
+    if (x != -1) {
+        int c = 0;
+        for (int i = 0; i < N; i++) {
+            if (a[i] == x)
+                c++;
+        }
+        if (c > (N/2))
+            return x;
+    }
+
+    if (y != -1) {
+        int c = 0;
+        for (int i = 0; i < N; i++) {
+            if (a[i] == y)
+                c++;
+        }
+
+        if (c > (N/2))
+            return y;
+    }
+
+    return -1;
+}
+
+int main(int argc, char ** argv) {
+    int N = argc - 1;
+
+    if (argc < 2)
+        return 1;
+
+    int * vec = malloc(N * sizeof(int));
+    for (int i = 0; i < N; i++) {
+        vec[i] = atoi(argv[i+1]);
+    }
+
+    printf("major: %d\n", majority(vec, N));
+}

Laboratorio 3/Esercizio 2/brani.txt

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+5
+	5
+		DivideAndConquer
+		MementoMori
+		LegacyOfHate_Pt.III
+		GhostLoveScore
+		TheHowling
+	3
+		BirdSetFree
+		ThePrayer
+		SomeoneLikeYou
+	4
+		Yellow
+		Wonderwall
+		MessageInABottle
+		FreeBird
+	5
+		GliAngeli
+		HoMessoVia
+		GliAnni
+		ReginaDiCuori
+		Pescatore
+	3
+		ISeeFire
+		ChasingCars
+		HowToSaveALife

Laboratorio 3/Esercizio 2/main.c

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+// Laboratorio 3 - Esercizio 2
+// Matteo Schiff - s295565
+
+#include <stdio.h>
+#include <stdlib.h>
+#define MAX_LEN 255
+
+typedef struct Lista
+{
+    unsigned int N;
+    char *canzoni;
+} lista;
+
+lista *leggi_brani(int *N, int **playlist)
+{
+    FILE *fp_read;
+
+    if ((fp_read = fopen("brani.txt", "r")) == NULL)
+    {
+        puts("Impossibile aprire il file");
+        return NULL;
+    }
+
+    fscanf(fp_read, "%u \n", N);
+
+    lista *raccolta = malloc(*N * sizeof(lista));
+    *playlist = malloc(*N * sizeof(int));
+
+    for (int i = 0; i < *N; i++)
+    {
+        fscanf(fp_read, "%u \n", &(raccolta[i].N));
+        raccolta[i].canzoni = malloc(raccolta[i].N * MAX_LEN * sizeof(char));
+        for (int j = 0; j < raccolta[i].N; j++)
+        {
+            fscanf(fp_read, "%s ", raccolta[i].canzoni + j * MAX_LEN);
+        }
+    }
+
+    fclose(fp_read);
+    return raccolta;
+}
+
+void free_brani(lista *mat, int N, int *playlist)
+{
+    for (int i = 0; i < N; i++)
+    {
+        free(mat[i].canzoni);
+    }
+
+    free(mat);
+    free(playlist);
+}
+
+void stampa_playlist(lista *mat, int *playlist, int N, int depth)
+{
+    if (N == depth)
+    {
+        puts("\nPlaylist:");
+        for (int i = 0; i < N; i++)
+        {
+            printf(" - %s\n", (mat[i].canzoni + playlist[i] * MAX_LEN));
+        }
+        return;
+    }
+
+    for (int i = 0; i < mat[depth].N; i++)
+    {
+        playlist[depth] = i;
+        stampa_playlist(mat, playlist, N, depth + 1);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    int N;
+    int *playlist;
+    lista *mat = leggi_brani(&N, &playlist);
+
+    if (mat == NULL)
+    {
+        return 1;
+    }
+
+    stampa_playlist(mat, playlist, N, 0);
+    free_brani(mat, N, playlist);
+    return 0;
+}