Can someone help me with these exercises? Exercise 1 Write a method (similar to

Question

Can someone help me with these exercises?

Exercise 1

Write a method (similar to Xlength ()) that counts the number of times a particular character occurs in a string. The string and the particular character are both paramenters of the method.

For example

countChar ("XaaaYaaaZaaaYaaY", 'Y')

returns 3.

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Exercise 2

Write a method that creates a string that is similar to the arguement string but with all the vowels removed. Regard a, e, i, o, u (upper and lower case) as vowles.

For example

removeVowles ("counterrevolutionaries")

returns "cntrrvltnrs"

removeVowels ("AUDIOBOOK")

returns "DBK"

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Exercise 3

A palindrome is a string that is the same when reserved. For example, "abba" is a palindrome. Here is a math-like definition.

palindrome ( "" ) = true

palindrome ( x ) = true

palindrome ( x + X + y ) = false, if x != y

                                      = palindrome ( X ), if x == y

The symbol x stands for a single character, as does y. The symbol x stands for a string of characters. The symbol + stands for concatenation.

Implement palidrome () and a program that tests it.

Explanation / Answer

(( JAVA : Short & Simple Solutions with proper explanations ))

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