Java Taskbook Level 10.3

Задание 1

Given an array of six digits, check if you can assemble a winning ticket from these digits.

Задание 2

Given an array of words, get a random word from this array that starts with a given letter.

Задание 3

Make a method that takes a singular English noun as a parameter and returns it in the plural.

Задание 4

Print to the console all pairs of friendly numbers from a given range.