Java Taskbook Level 2.3

Задание 1

Given an array of integers:

javaint[] arr = {1, 2, 3, 4, 5};

Find the sum of the squares of the elements of this array.

Задание 2

Given an array of integers:

javaint[] arr = {1, 2, 3, 4, 5};

Find the arithmetic mean of this array.

Задание 3

Given an array:

javaint[10] arr;

Use a loop to fill this array with integers from 1 to 10.