Write method headers (declarations) for methods with the foloowing descriptions:(Note: the method should not return anything if not necessary.)

1. A method that returns the sum of its two input parameters,which are doubles.

2. A method that takes a string as a parameter and returns the same string, with a period appended.

3 A method that prints out the time of day to the console.

4. A method that takes an array of strings as a parameter and appends a period to each string.

5. A method that takes an array of strings as one parameter appends the contents of a second parameter (a string) to each string.

6. A method that returns true if its interger parameter is even, false otherwise.

7. A method that returns the integer that is closest to its double parameter, without being grater.

8. A method that takes two one-dimensional arrays of int's as input and returns a two dimensional array that is the concatenation of the two input arrays.

9. A method that returns the number of columns in a two-dimensional array of doubles

10. A method that takes an array of int's as one parameter adds the value of a second parameter (an int) to each item in the array.

11. A method that takes a two-dimensional array of int's as a parameter and searches the array for the second parameter, returning true if the second parameter matches any of the integers in the array, and false otherwise.