Contents

class FlattenArray {
    static List flatten(List l) {
        if(l.isEmpty()) {
            return l
        }

        List ret = new ArrayList()
        def head = l[0]
        def tail = l.subList(1, l.size())

        if(head instanceof List) {
            ret.addAll(flatten((List) head))
        } else {
            ret.add(head)
        }

        ret.addAll(flatten(tail))
        ret.removeAll { it == null }
        ret
    }
}

Version data entries

100 entries across 100 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.179	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.178	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.177	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.176	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.175	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.174	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.173	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.172	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.171	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.170	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.169	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.167	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.166	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.165	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.164	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.163	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.162	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.161	tracks/groovy/exercises/flatten-array/Example.groovy
trackler-2.2.1.160	tracks/groovy/exercises/flatten-array/Example.groovy