/*  Write a function to create a Christmas tree based on height h.
 *  		tree(0) ➞ []
 *  		tree(1) ➞ 
							"#"
				tree(2) ➞
						" # ",
						"###"
				tree(5) ➞ 
					"    #    ",
					"   ###   ",
					"  #####  ",
					" ####### ",
					"#########"
// 0000 5 0000
// 000 555 000
// 00 55555 00
// 0 5555555 0
//  555555555
//  the "whorls" [each level of the tree] are odd in length.
//  the integer passed to the function will create 
//  "h" amount of strings. 
//  the length of each whorl is "h" +"h-1"
//  airSpace ("air") around the branches is "air"
std::vector<std::string> treeX(int h) {
	std::vector<std::string> whorl;
	int maxWhorl = h + (h-1);
	for(;h>0;h--){
		c = "#";
		// create the base of the tree & maxWhorl
	}
}
*/
std::vector<std::string> tree(int h) {
	std::vector<std::string> r;
	// set the base whorl (abs protects against 0 height tree)
	std::string base = std::string(abs(h+h-1),'#');
	for(int i=0;i<h;i++){
		// prepend previous whorl to tree
		r.insert(r.begin(),base);
		// reduce size of whorl for next loop
		base[base.size()-i-1] = ' ';
		base[i] = ' ';
	}
	return r;
}