# Tutorial 7: Lists
# Goal: Store many values and transform them.
#
# Indexing starts at 0: items[0]. Append with append(list, v) or list.append(v).
# Iterate with `for x of items`. Built-ins: len(), sort(), pop(), reverse().

fruits = ["apple", "banana", "cherry"]
say("first: " + fruits[0])
say("last: " + fruits[2])
say("length: " + str(len(fruits)))

fruits.append("date")
say("after append: " + str(fruits))
fruits.pop()
say("after pop: " + str(fruits))

numbers = [5, 3, 9, 1, 7]
numbers.sort()
say("sorted: " + str(numbers))

total = 0
for n of numbers
    total = total + n
end
say("sum: " + str(total))

bring lists
nested = [1, [2, 3], [4, [5, 6]]]
say("flattened: " + str(lists.flatten(nested)))
say("unique of [1,2,2,3,3,3]: " + str(lists.unique([1, 2, 2, 3, 3, 3])))
say("reversed [1,2,3,4]: " + str(lists.reversed([1, 2, 3, 4])))
say("first [9,8,7]: " + str(lists.first([9, 8, 7])))
say("last [9,8,7]: " + str(lists.last([9, 8, 7])))

# Challenge: find the largest value in a list using a loop.