sofakingworld

# test for Flatstack
# https://github.com/fs/test-tasks/tree/master/ruby
# Дана последовательность:
# 1
# 11
# 21
# 1211
# 111221
# 312211
# Нужно чтобы ваша программа могла продолжить данную последовательность. Можете в реализации использовать любые библиотеки.

sofakingworld

def brackets_balanced?(s)
	brackets = [['(',')'],['[',']'],['{','}']]
	flatten_brackets = brackets.flatten
	close_brackets = brackets.map{|e| e[1]}
	stack = ''
	for i in 0..s.size do
		stack += s[i] if flatten_brackets.include?(s[i])
		stack = stack[0,stack.size-2] if brackets.include? [stack[stack.size-2,1],stack[stack.size-1,1]]
		return false if close_brackets.include? stack[stack.size-1,1] 
	end

sofakingworld

Is a table containing identifiers and the vertex coordinates of figures.
P (Polygon_id int, point_id int, x float, y float)
Points are listed sequentially in a clockwise or counter- clockwise


1. It is necessary to write a function that returns the area of a selected polygon
2. It is necessary to write a function that returns the perimeter of the selected polygon
3. Check whether the point is on the specified coordinates inside the polygon

sofakingworld

select Value+CHAR(32) from Table 
for xml path('')