Groovy: List: Check whether lists are disjoint or not

Groovy provides ‘disjoint’ method, it returns true, if the lists are disjoint, else false.

public boolean disjoint(Iterable right)

Returns true if the intersection of two iterables is empty.

HelloWorld.groovy

list1 = [2, 3, 5]
list2 = [5, 10, 15]
list3 = [7, 14, 21]

println "list1.disjoint(list2) : ${list1.disjoint(list2)}"
println "list1.disjoint(list3) : ${list1.disjoint(list3)}"
println "list2.disjoint(list3) : ${list2.disjoint(list3)}"

Output

list1.disjoint(list2) : false

list1.disjoint(list3) : true

list2.disjoint(list3) : true

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