PMD fix

Author: varada610

pmd-exclude.properties

@@ -46,6 +46,7 @@ com.thealgorithms.maths.KaprekarNumbers=UselessParentheses
 com.thealgorithms.maths.KeithNumber=UselessParentheses
 com.thealgorithms.maths.LeonardoNumber=UselessParentheses
 com.thealgorithms.maths.LinearDiophantineEquationsSolver=UselessParentheses
+com.thealgorithms.maths.MatrixUtil=UselessParentheses
 com.thealgorithms.maths.RomanNumeralUtil=UselessParentheses
 com.thealgorithms.maths.SecondMinMax=UselessParentheses
 com.thealgorithms.maths.SecondMinMaxTest=UnnecessaryFullyQualifiedName

src/main/java/com/thealgorithms/matrix/utils/MatrixUtil.java

@@ -19,11 +19,11 @@ private static boolean isValid(final BigDecimal[][] matrix) {
     }
 
     private static boolean hasEqualSizes(final BigDecimal[][] matrix1, final BigDecimal[][] matrix2) {
-        return (isValid(matrix1) && isValid(matrix2) && matrix1.length == matrix2.length && matrix1[0].length == matrix2[0].length);
+        return isValid(matrix1) && isValid(matrix2) && matrix1.length == matrix2.length && matrix1[0].length == matrix2[0].length;
     }
 
     private static boolean canMultiply(final BigDecimal[][] matrix1, final BigDecimal[][] matrix2) {
-        return (isValid(matrix1) && isValid(matrix2) && matrix1[0].length == matrix2.length);
+        return isValid(matrix1) && isValid(matrix2) && matrix1[0].length == matrix2.length;
     }
 
     public static void validateInputMatrix(double[][] matrix) {