Fix package declarations (#2576)

Maths/AutomorphicNumber.java

@@ -1,3 +1,5 @@
+package Maths;
+
 /**
  * A number is said to be an Automorphic, if it is present in the last digit(s) of its square.
  * Example- Let the number be 25, its square is 625.

Maths/CircularConvolutionFFT.java

@@ -1,4 +1,4 @@
-package com.maths;
+package Maths;
 
 import java.util.ArrayList;
 

Maths/Convolution.java

@@ -1,4 +1,4 @@
-package com.maths;
+package Maths;
 
 /**
  * Class for linear convolution of two discrete signals

Maths/ConvolutionFFT.java

@@ -1,4 +1,4 @@
-package com.maths;
+package Maths;
 
 import java.util.ArrayList;
 

Maths/FFT.java

@@ -1,4 +1,4 @@
-package com.maths;
+package Maths;
 
 import java.util.ArrayList;
 import java.util.Collections;

Maths/FFTBluestein.java

@@ -1,4 +1,4 @@
-package com.maths;
+package Maths;
 
 import java.util.ArrayList;
 

Maths/GenericRoot.java

@@ -1,3 +1,5 @@
+package Maths;
+
 /*
  * Algorithm explanation: https://technotip.com/6774/c-program-to-find-generic-root-of-a-number/#:~:text=Generic%20Root%3A%20of%20a%20number,get%20a%20single%2Ddigit%20output.&text=For%20Example%3A%20If%20user%20input,%2B%204%20%2B%205%20%3D%2015.
  */

Maths/KeithNumber.java

@@ -1,4 +1,7 @@
-import java.util.*;  
+package Maths;
+
+import java.util.*;
+
 class KeithNumber  
 {  
     //user-defined function that checks if the given number is Keith or not  

Maths/KrishnamurthyNumber.java

@@ -1,4 +1,4 @@
-//package Maths;
+package Maths;
 
 /* This is a program to check if a number is a Krishnamurthy number or not.
 A number is a Krishnamurthy number if the sum of the factorials of the digits of the number is equal to the number itself.

Maths/MagicSquare.java

@@ -1,4 +1,7 @@
+package Maths;
+
 import java.util.*;
+
 /*A magic square of order n is an arrangement of distinct n^2 integers,in a square, such that the n numbers in all
 rows, all columns, and both diagonals sum to the same constant. A magic square contains the integers from 1 to n^2.*/
 public class MagicSquare {

Maths/RomanNumeralUtil.java

@@ -1,3 +1,5 @@
+package Maths;
+
 /**
  * Translates numbers into the Roman Numeral System.
  *