Java programming

1) Write a program (e.g. CHomework5A) that will read in a number from 1 to 20 from the user. Keep reading until a number in that range is entered. The program will produce a right triangle of $ of the desired height. For example: Height of triangle? 4 2) Write a program (e.g. CHomework5B) that will read in an uppercase letter from A and Z from the user. The program will produce a right triangle of letters in descending order in the following format: Enter letter A-Z? E ED EDC EDCB EDCBA