CountEval the number of parenthesis required to evaluate a string.

GenerateAllValidParens generates all valid parenthesis having count.

GetPermutations returns all permutations of a string.

GetPermutationsWithDuplicates returns all permutations of a string without duplicates.

MakeChange returns the amount of combinations of quaters, nikels, dimes and ones needed to make n.

MaxStackHeight calculates the maximum height that can be archived by stacking an array of boxes.

PaintFill paints radially outwards.

PlaceNQueens returns the number of ways of placing n queens in an n x n grid.

Box is a box with height, width and depth dimensions.

Color represents a color.