basically strings conation, one of the basic concepts concatenation of a string, what is concatenation of a string that is nothing but joining two or more strings joining function.08:40So join, let us assume that there is a string x which is 1, 1, 1, there is a string y which is 1. 1. 0. The con 0, 1, 1, 1, 0, 1, 0. this much will be my x, this much will be my y.