How do you merge indexes of two lists in Groovy? -

i have 2 lists need merge new list, new list needs contain merged indexes of original lists. example:

list1 = [1, 2, 3] list2 = [a, b, c]

i need output be:

finallist = [1a, 2b, 3c]

i need able in groovy. appreciate can provide.

assuming both lists same size, in groovy 2.4+,

list1 = [1, 2, 3] list2 = ['a', 'b', 'c']  assert ['1a', '2b', '3c'] == list1.withindex().collect { it, index -> + list2[index] }

alternatively , bit more in groovy 1.5+,

assert ['1a', '2b', '3c'] == [list1, list2].transpose()*.sum()

Chrom