Java Taskbook Level 4.6

Задание 1

Given a string, check that this string consists only of numbers.

Задание 2

Given an integer:

javaint num = 12345;

Get the first even digit from the end of this number.

Задание 3

Write a program that will generate the following string:

java"54321"

Задание 4

Given an array of integers:

javaint[] arr = {123, 102, 345, 350};

Print to the console only those numbers that contain the digit zero.

Задание 5

Given a line:

java"abcdef"

Get every second character of this string:

java"acf"

Задание 6

Given an array:

javaint[] arr = {1, 2, 3, 0, 4, 0, 5, 0};

Create a new array such that the new array contains all the elements of the first array except the elements with value 0.