var interestingNumbers = ["primes": [2, 3, 5, 7, 11, 13, 15],
"triangular": [1, 3, 6, 10, 15, 21, 28],
"hexagonal": [1, 6, 15, 28, 45, 66, 91]]
// Решение
[
"primes": [2, 3, 5, 7, 11, 13, 15],
"triangular": [1, 3, 6, 10, 15, 21, 28],
"hexagonal": [1, 6, 15, 28, 45, 66, 91],
].sorted { $0.key < $1.key }
// [
// (key: "hexagonal", value: [1, 6, 15, 28, 45, 66, 91])
// (key: "primes", value: [2, 3, 5, 7, 11, 13, 15]),
// (key: "triangular", value: [1, 3, 6, 10, 15, 21, 28]),
// ]