如何根据R中不同列上/下行中的值创建列

I have been thinking about this for a while and cannot come up with a solution. I have data in column X that I want to use to create the data in column Z. I want Z to be all 1's up to the point where there are two 0's in a row in X, then all zeros after that. Also, in column W I want the final elements to be 1's when looking at Y from the bottom up, Y contains two 0's in a row. Hope that makes sense. I have put in column Z and column W how they should end up looking. I am trying to use indexing, but I am having a hard time figuring out how to reference the rows from column X that come after the row where the value for Z will be (because the value in row 1 of Z is based on the values of rows 2 and 3 in X). These should be two separate functions, one to look at the beginning and one to look at the end. They will both be aplplied to each row separately, so column X will produce two columns, Z as below, as well as another column which in this case would be all 0's. Thanks for any help!I have been thinking about this for a while and