Java Taskbook Level 10.6

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.

Given an arbitrary two-dimensional array:

{
	{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:

{
	{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},
}

Given some URL:

String url = "http://test.com/dir1/dir2/dir3/page.html";

Given variables:

int num = 2;
String val = "eee";

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

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