Rust Taskbook Level 4.6
Given a string, check that this string consists only of numbers.
Given a vector:
vec![1, 0, 2, 3, 0, 5]
Remove all zeros from the vector:
[1, 2, 3, 5]
Given a vector:
let vct: Vec<i16> = Vec::new();
Write code that will fill this vector with powers of two to the nth power:
[2, 4, 8, 16, 32]
Given an integer:
let num: u16 = 12345;
Get the first even digit from the end of this number.
Write a program that will generate the following string:
"54321"
Given an array of integers:
let arr = [123, 102, 345, 350];
Write into the new vector those numbers that contain the digit zero.
Given a line:
"abcdef"
Get every second character of this string:
"acf"
