RosettaCodeData/Task/General-FizzBuzz/Java/general-fizzbuzz-2.java

30 lines
1.3 KiB
Java

import java.util.stream.*;
import java.util.function.*;
import java.util.*;
public class fizzbuzz_general {
/**
* To run: java fizzbuzz_general.java 3=Fizz 5=Buzz 7=Baxx 100
*
*/
public static void main(String[] args) {
Function<String[],Function<Integer,String>> make_cycle_function =
parts -> j -> j%(Integer.parseInt(parts[0]))==0?parts[1]:"";
List<Function<Integer,String>> cycle_functions = Stream.of(args)
.map(arg -> arg.split("="))
.filter(parts->parts.length==2)
.map(make_cycle_function::apply)
.collect(Collectors.toList());
Function<Integer,String> moduloTesters = i -> cycle_functions.stream()
.map(fcn->fcn.apply(i))
.collect(Collectors.joining());
BiFunction<Integer,String,String> formatter =
(i,printThis) -> "".equals(printThis)?Integer.toString(i):printThis;
Function<Integer,String> fizzBuzz = i -> formatter.apply(i,moduloTesters.apply(i));
IntStream.rangeClosed(0,Integer.parseInt(args[args.length-1]))
.mapToObj(Integer::valueOf)
.map(fizzBuzz::apply)
.forEach(System.out::println);
}
}