tasks a-s

Task/Pangram-checker/D/pangram-checker-1.d

@@ -0,0 +1,19 @@
+bool isPangram(in string text) pure nothrow {
+    uint bitset;
+
+    foreach (c; text) {
+        if (c >= 'a' && c <= 'z')
+            bitset |= (1u << (c - 'a'));
+        else if (c >= 'A' && c <= 'Z')
+            bitset |= (1u << (c - 'A'));
+    }
+
+    return bitset == 0b11_11111111_11111111_11111111;
+}
+
+void main() {
+    assert(isPangram("the quick brown fox jumps over the lazy dog"));
+    assert(!isPangram("ABCDEFGHIJKLMNOPQSTUVWXYZ"));
+    assert(!isPangram("ABCDEFGHIJKL.NOPQRSTUVWXYZ"));
+    assert(isPangram("ABC.D.E.FGHI*J/KL-M+NO*PQ R\nSTUVWXYZ"));
+}

Task/Pangram-checker/D/pangram-checker-2.d

@@ -0,0 +1,22 @@
+import std.string, std.traits, std.uni;
+
+// Do not compile with -g (debug info).
+enum Alphabet : dstring {
+    DE = "abcdefghijklmnopqrstuvwxyzßäöü",
+    EN = "abcdefghijklmnopqrstuvwxyz",
+    SV = "abcdefghijklmnopqrstuvwxyzåäö"
+}
+
+bool isPangram(S)(in S s, dstring alpha = Alphabet.EN)
+pure /*nothrow*/ if (isSomeString!S) {
+    foreach (dchar c; alpha)
+       if (indexOf(s, c) == -1 && indexOf(s, std.uni.toUpper(c)) == -1)
+            return false;
+    return true;
+}
+
+void main() {
+    assert(isPangram("the quick brown fox jumps over the lazy dog".dup, Alphabet.EN));
+    assert(isPangram("Falsches Üben von Xylophonmusik quält jeden größeren Zwerg"d, Alphabet.DE));
+    assert(isPangram("Yxskaftbud, ge vår wczonmö iqhjälp"w, Alphabet.SV));
+}