8. 例(Sum関数)
Java
public class Sum {
public static void main(String[] args) {
int start = Integer.parseInt(args[0]);
int end = Integer.parseInt(args[1]);
int sum = 0;
for (int num = start; num <= end; num++)
sum += num;
Scala
object Sum {
def main(args: Array[String]) {
println((start to end).foldLeft(0)((x, y) => x + y))
}
}
System.out.println(sum);
}
}
Javaの1/2〜1/3のコード量