Lab 10:  Practicing Recursive Functions


Learning Objectives: The objective of this lab is to gain experience with writing recursive functions.


project: Write in Java programming language for the following recursive functions (no credit for iterative implementations) and Write a main method to test the functions

a. Write a recursive function writeLine() that writes a character repeatedly to form a line of n characters. For ple, writeLine('*',5) should produce the line *****.

b. Write a recursive function writeBlock() that uses the method writeLine() to write m lines of n characters each. For ple, writeBlock('*',5,3) should produce the following output:

*****

*****

*****


c. Write a recursive function writeBackward() that write a given string of characters in reverse order.  For ple, writeBackward(“abcde”, 5) should give the output: edcba


d. Write a recursive function displayArrayList(ArrayListA, int first, int last) that receives an ArrayList A, first index, last index and displays the ArrayList in order


e. Write a recursive function int vowels(String s, int size) that receives a string and returns the number of vowels in the string


f. Write a recursive function void ReverseString (String s) that receives a string and print the string backwards.


Submission


Follow our class coding standard to complete this lab, compile and run it, check out for credit.