Data commit

Task/Pangram-checker/C/pangram-checker-1.c

@@ -0,0 +1,41 @@
+#include <stdio.h>
+
+int is_pangram(const char *s)
+{
+	const char *alpha = ""
+		"abcdefghjiklmnopqrstuvwxyz"
+		"ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+	char ch, wasused[26] = {0};
+	int total = 0;
+
+	while ((ch = *s++) != '\0') {
+		const char *p;
+		int idx;
+
+		if ((p = strchr(alpha, ch)) == NULL)
+			continue;
+
+		idx = (p - alpha) % 26;
+
+		total += !wasused[idx];
+		wasused[idx] = 1;
+		if (total == 26)
+			return 1;
+	}
+	return 0;
+}
+
+int main(void)
+{
+	int i;
+	const char *tests[] = {
+		"The quick brown fox jumps over the lazy dog.",
+		"The qu1ck brown fox jumps over the lazy d0g."
+	};
+
+	for (i = 0; i < 2; i++)
+		printf("\"%s\" is %sa pangram\n",
+			tests[i], is_pangram(tests[i])?"":"not ");
+	return 0;
+}

Task/Pangram-checker/C/pangram-checker-2.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int pangram(const char *s)
+{
+	int c, mask = (1 << 26) - 1;
+	while ((c = (*s++)) != '\0') /* 0x20 converts lowercase to upper */
+		if ((c &= ~0x20) <= 'Z' && c >= 'A')
+			mask &= ~(1 << (c - 'A'));
+
+	return !mask;
+}
+
+int main()
+{
+	int i;
+	const char *s[] = {	"The quick brown fox jumps over lazy dogs.",
+				"The five boxing wizards dump quickly.",  };
+
+	for (i = 0; i < 2; i++)
+		printf("%s: %s\n", pangram(s[i]) ? "yes" : "no ", s[i]);
+
+	return 0;
+}