Data commit

Task/Humble-numbers/D/humble-numbers.d

@@ -0,0 +1,42 @@
+import std.conv;
+import std.stdio;
+
+bool isHumble(int i) {
+    if (i <= 1) return true;
+    if (i % 2 == 0) return isHumble(i / 2);
+    if (i % 3 == 0) return isHumble(i / 3);
+    if (i % 5 == 0) return isHumble(i / 5);
+    if (i % 7 == 0) return isHumble(i / 7);
+    return false;
+}
+
+void main() {
+    auto limit = short.max;
+    int[int] humble;
+    auto count = 0;
+    auto num = 1;
+
+    while (count < limit) {
+        if (isHumble(num)) {
+            auto str = num.to!string;
+            auto len = str.length;
+            humble[len]++;
+            if (count < 50) write(num, ' ');
+            count++;
+        }
+        num++;
+    }
+    writeln('\n');
+
+    writeln("Of the first ", count, " humble numbers:");
+    num = 1;
+    while (num < humble.length - 1) {
+        if (num in humble) {
+            auto c = humble[num];
+            writefln("%5d have %2d digits", c, num);
+            num++;
+        } else {
+            break;
+        }
+    }
+}