1. WAP (Write a program) in Java to read in a positive integer from user and find it's reverse. Display the result. 2. Write a Java Program to reverse the letters present in the given String. 3. WAP to compute the sum of the digits of a positive number. 4. WAP to read in a sequence of n numbers (both negative and non-negative) and find the average of the non-negative numbers. 5. WAP to take as input a positive integer and check if it is even or not. 6. WAP to generate all prime numbers up to n, where n is given as input by the user. 7. WAP to display the following sequences: a) 123 45 1 2 3 4 123 12 d) 5 54 543 5432 5 4 3 2 1 b) 1 21 321 4321 5 4 3 2 1 e) 5 4 3 2 1 4 3 2 1 321 21 1 c) 5 4 3 2 1 5432 543 54 5