feat: Initial commit

Laboratorio 9/Esercizio 1/ST.c

@@ -0,0 +1,61 @@
+// Laboratorio 9 - Esercizio 1 - ST.c
+// Matteo Schiff - s295565
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "ST.h"
+
+struct st {
+    char **table;
+    int N;
+    int maxN;
+};
+
+ST STinit(int N) {
+    ST st = malloc(sizeof(*st));
+
+    st->table = malloc(N * sizeof(char *));
+    for (int i = 0; i < N; i++) {
+        st->table[i] = (char *)malloc(MAX_LEN+1*sizeof(char));
+    }
+    st->N = 0;
+    st->maxN = N;
+
+    return st;
+}
+
+void STfree(ST st) {
+    free(st->table);
+    free(st);
+}
+
+int STinsert(ST st, char * label) {
+    if (st->N == st->maxN) {
+        printf("Errore, spazio esaurito nella ST\n");
+        return -1;
+    }
+
+    strncpy(st->table[st->N++], label, MAX_LEN+1);
+    return st->N-1;
+}
+
+char * STsearchByIndex(ST st, int index) {
+    if (index >= st->N)
+        return NULL;
+
+    return st->table[index];
+}
+
+int STsearch(ST st, char * label) {
+    for (int i = 0; i < st->N; i++) {
+        if (strcmp(label, st->table[i]) == 0)
+            return i;
+    }
+    return -1;
+}
+
+int STcount(ST st) {
+    return st->N;
+}