Data commit

Task/String-matching/C/string-matching-1.c

@@ -0,0 +1,32 @@
+#include <string.h>
+#include <stdio.h>
+
+int startsWith(const char* container, const char* target)
+{
+  size_t clen = strlen(container), tlen = strlen(target);
+  if (clen < tlen)
+    return 0;
+  return strncmp(container, target, tlen) == 0;
+}
+
+int endsWith(const char* container, const char* target)
+{
+  size_t clen = strlen(container), tlen = strlen(target);
+  if (clen < tlen)
+    return 0;
+  return strncmp(container + clen - tlen, target, tlen) == 0;
+}
+
+int doesContain(const char* container, const char* target)
+{
+  return strstr(container, target) != 0;
+}
+
+int main(void)
+{
+  printf("Starts with Test ( Hello,Hell ) : %d\n", startsWith("Hello","Hell"));
+  printf("Ends with Test ( Code,ode ) : %d\n", endsWith("Code","ode"));
+  printf("Contains Test ( Google,msn ) : %d\n", doesContain("Google","msn"));
+
+  return 0;
+}

Task/String-matching/C/string-matching-2.c

@@ -0,0 +1,44 @@
+#include <stdio.h>
+
+/* returns 0 if no match, 1 if matched, -1 if matched and at end */
+int s_cmp(const char *a, const char *b)
+{
+        char c1 = 0, c2 = 0;
+        while (c1 == c2) {
+                c1 = *(a++);
+                if ('\0' == (c2 = *(b++)))
+                        return c1 == '\0' ? -1 : 1;
+        }
+        return 0;
+}
+
+/* returns times matched */
+int s_match(const char *a, const char *b)
+{
+        int i = 0, count = 0;
+        printf("matching `%s' with `%s':\n", a, b);
+
+        while (a[i] != '\0') {
+                switch (s_cmp(a + i, b)) {
+                case -1:
+                        printf("matched: pos %d (at end)\n\n", i);
+                        return ++count;
+                case 1:
+                        printf("matched: pos %d\n", i);
+                        ++count;
+                        break;
+                }
+                i++;
+        }
+        printf("end match\n\n");
+        return count;
+}
+
+int main()
+{
+        s_match("A Short String", "ort S");
+        s_match("aBaBaBaBa", "aBa");
+        s_match("something random", "Rand");
+
+        return 0;
+}