Data commit

Task/Price-fraction/D/price-fraction.d

@@ -0,0 +1,19 @@
+import std.stdio, std.range;
+
+double priceRounder(in double price) pure nothrow
+in {
+    assert(price >= 0 && price <= 1.0);
+} body {
+    static immutable cin  = [.06, .11, .16, .21, .26, .31, .36, .41,
+                             .46, .51, .56, .61, .66, .71, .76, .81,
+                             .86, .91, .96, 1.01],
+                     cout = [.10, .18, .26, .32, .38, .44, .50, .54,
+                             .58, .62, .66, .70, .74, .78, .82, .86,
+                             .90, .94, .98, 1.00];
+    return cout[cin.assumeSorted.lowerBound(price).length];
+}
+
+void main() {
+    foreach (const price; [0.7388727, 0.8593103, 0.826687, 0.3444635])
+        price.priceRounder.writeln;
+}