Made the method to breakdown strings. break_down(int) vector input holds broken down strings.
Made methods to get the string from the vector. Note: the first vector contains the last part of the string
, and the last vector contains the first string.
example: 
input: This is a test string
vector { "string" , " test", "s is a", "This"}
	     start		             end
made methods to get the size-1 of the vector get_vect_end()
and get_vect(int) to get the string at the element
Made the method to breakdown strings. break_down(int) vector input holds broken down strings.
Made methods to get the string from the vector. Note: the first vector contains the last part of the string
, and the last vector contains the first string.
example: 
input: This is a test string
vector { "string" , " test", "s is a", "This"}
	     start		             end
made methods to get the size-1 of the vector get_vect_end()
and get_vect(int) to get the string at the element