Rust Taskbook Level 10.6

Задание 1

Ask the user for a long word via the console. Display a list of words that can be formed from the letters of the entered word.

Задание 2

Given an arbitrary two-dimensional array:

rust[
  [11, 12, 13, 14, 15],
  [21, 22, 23, 24, 25],
  [31, 32, 33, 34, 35],
  [41, 42, 43, 44, 45],
  [51, 52, 53, 54, 55],
}

Zero out the elements below the main diagonal:

rust[
  [11, 12, 13, 14, 15],
  [ 0, 22, 23, 24, 25],
  [ 0,  0, 33, 34, 35],
  [ 0,  0,  0, 44, 45],
  [ 0,  0,  0,  0, 55],
}

Задание 3

Given some URL:

rustlet url: &str = "http://test.com/dir1/dir2/dir3/page.html";

Given variables:

rustlet num: u8 = 2;
let val: &str = "eee";

Replace the folder with the number num in the URL with the value val:

rust"http://test.com/dir1/eee/dir3/page.html"