Sort an array of strings alphabetically in groovy

arrays, groovy, input, sorting

Solution

`sort()` is your friend.

`country.sort()` will sort `country` alphabetically, mutating `country` in the process. `country.sort(false)` will sort `country` alphabetically, returning the sorted list.

def country = ['Ireland', 'Iceland', 'Hungary', 'Thailand']
assert country.sort() == ['Hungary', 'Iceland', 'Ireland', 'Thailand']
assert country == ['Hungary', 'Iceland', 'Ireland', 'Thailand']

country = ['Ireland', 'Iceland', 'Hungary', 'Thailand']
assert country.sort(false) == ['Hungary', 'Iceland', 'Ireland', 'Thailand']
assert country == ['Ireland', 'Iceland', 'Hungary', 'Thailand']

Problem

So I have been learning to work with arrays in Groovy. I am wondering how to sort an array of strings alphabetically. My code currently takes string input from the user and prints them out in order and reverse order: ``` System.in.withReader { def country = [] print 'Enter your ten favorite countries:' for (i in 0..9) country << it.readLine() print 'Your ten favorite countries in order/n' println country //prints the array out in the order in which it was entered print 'Your ten favorite countries in reverse' country.reverseEach { println it } //reverses the order of the array ``` How would I go about printing them out alphabetically?

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