style: include OCP_OVERLY_CONCRETE_PARAMETER (#5833)

src/main/java/com/thealgorithms/maths/CircularConvolutionFFT.java

@@ -1,6 +1,7 @@
 package com.thealgorithms.maths;
 
 import java.util.ArrayList;
+import java.util.Collection;
 
 /**
  * Class for circular convolution of two discrete signals using the convolution
@@ -19,7 +20,7 @@ public final class CircularConvolutionFFT {
      * @param x The signal to be padded.
      * @param newSize The new size of the signal.
      */
-    private static void padding(ArrayList<FFT.Complex> x, int newSize) {
+    private static void padding(Collection<FFT.Complex> x, int newSize) {
         if (x.size() < newSize) {
             int diff = newSize - x.size();
             for (int i = 0; i < diff; i++) {

src/main/java/com/thealgorithms/maths/ConvolutionFFT.java

@@ -1,6 +1,7 @@
 package com.thealgorithms.maths;
 
 import java.util.ArrayList;
+import java.util.Collection;
 
 /**
  * Class for linear convolution of two discrete signals using the convolution
@@ -19,7 +20,7 @@ public final class ConvolutionFFT {
      * @param x The signal to be padded.
      * @param newSize The new size of the signal.
      */
-    private static void padding(ArrayList<FFT.Complex> x, int newSize) {
+    private static void padding(Collection<FFT.Complex> x, int newSize) {
         if (x.size() < newSize) {
             int diff = newSize - x.size();
             for (int i = 0; i < diff; i++) {

src/main/java/com/thealgorithms/maths/FFT.java

@@ -1,6 +1,7 @@
 package com.thealgorithms.maths;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 
 /**
@@ -274,7 +275,7 @@ public final class FFT {
      *
      * @param x The ArrayList to be padded.
      */
-    private static void paddingPowerOfTwo(ArrayList<Complex> x) {
+    private static void paddingPowerOfTwo(Collection<Complex> x) {
         int n = 1;
         int oldSize = x.size();
         while (n < oldSize) {

src/main/java/com/thealgorithms/maths/FFTBluestein.java

@@ -1,6 +1,7 @@
 package com.thealgorithms.maths;
 
 import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Class for calculating the Fast Fourier Transform (FFT) of a discrete signal
@@ -25,7 +26,7 @@ public final class FFTBluestein {
      * IFFT of signal x.
      * @param inverse True if you want to find the inverse FFT.
      */
-    public static void fftBluestein(ArrayList<FFT.Complex> x, boolean inverse) {
+    public static void fftBluestein(List<FFT.Complex> x, boolean inverse) {
         int n = x.size();
         int bnSize = 2 * n - 1;
         int direction = inverse ? -1 : 1;

src/main/java/com/thealgorithms/maths/Gaussian.java

@@ -1,12 +1,13 @@
 package com.thealgorithms.maths;
 
 import java.util.ArrayList;
+import java.util.List;
 
 public final class Gaussian {
     private Gaussian() {
     }
 
-    public static ArrayList<Double> gaussian(int matSize, ArrayList<Double> matrix) {
+    public static ArrayList<Double> gaussian(int matSize, List<Double> matrix) {
         int i;
         int j = 0;
 

src/main/java/com/thealgorithms/maths/NthUglyNumber.java

@@ -2,6 +2,7 @@ package com.thealgorithms.maths;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Map;
 import org.apache.commons.lang3.tuple.MutablePair;
 
 /**
@@ -64,7 +65,7 @@ public class NthUglyNumber {
         }
     }
 
-    private long computeCandidate(final MutablePair<Integer, Integer> entry) {
+    private long computeCandidate(final Map.Entry<Integer, Integer> entry) {
         return entry.getKey() * uglyNumbers.get(entry.getValue());
     }