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Largest int from concatenated ints: Difference between revisions
Largest int from concatenated ints (view source)
Revision as of 18:04, 25 October 2013
, 10 years agoAdded Java 8 example
(Added Erlang) |
(Added Java 8 example) |
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Line 465:
System.out.println(join(ints2));
}
}</lang>
{{works with|Java|1.8+}}
<lang java5>import java.util.Comparator;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public interface IntConcat {
public static Comparator<Integer> SORTER = (o1, o2) -> {
String o1s = o1.toString();
String o2s = o2.toString();
if (o1s.length() == o2s.length()) {
return o2s.compareTo(o1s);
}
int mlen = Math.max(o1s.length(), o2s.length());
while (o1s.length() < mlen * 2) {
o1s += o1s;
}
while (o2s.length() < mlen * 2) {
o2s += o2s;
}
return o2s.compareTo(o1s);
};
public static void main(String[] args) {
Stream<Integer> ints1 = Stream.of(
1, 34, 3, 98, 9, 76, 45, 4
);
System.out.println(ints1
.parallel()
.sorted(SORTER)
.map(String::valueOf)
.collect(Collectors.joining())
);
Stream<Integer> ints2 = Stream.of(
54, 546, 548, 60
);
System.out.println(ints2
.parallel()
.sorted(SORTER)
.map(String::valueOf)
.collect(Collectors.joining())
);
}
}</lang>
Output:
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