Plural.kt

@@ -0,0 +1,17 @@
+fun String.plural(size: Int): String {
+    val consonants = "bcdfghjklmnpqrstvwxz"
+
+    if (size > 1 && this.length > 2) {
+        if ((this.endsWith("o", true) || this.endsWith("s", true)) &&
+                consonants.contains(this[this.length - 2], true)) {
+            return this + "es"
+        }
+
+        if (this.endsWith("y", true) &&
+                consonants.contains(this[this.length - 2], true)) {
+            return this + "ies"
+        }
+    }
+
+    return this + "s"
+}