R coding

Use keep the rows the satisfy all of the following conditions in df and remove the remaining rows:

a. last_review is in 2018 or 2019 [Hint: compare last_review with as.Date("2018-1-1") but not with "2018-1-1" because last_review and as.Date("2018-1-1") are both of Date type and thus comparable, but "2018-1-1" is of character type. Do the comparison with as.Date("2019-12-31") also and take conjuction] b. availability_365 is strictly positive c. minimum_nights is between 1 and 180 inclusive. d. price is no more than 1000 (<=1000) and greater than 0 (>0).