diff --git a/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceBase.java b/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceBase.java
index e884c576c1..ec66621928 100644
--- a/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceBase.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceBase.java
@@ -1,22 +1,15 @@
 package com.baeldung.algorithms.editdistance;
 
+import java.util.Arrays;
+
 public class EditDistanceBase {
 
-    public static int costOfSubstitution(char a, char b) {
-        if (a == b) {
-            return 0;
-        }
-        return 1;
+    static int costOfSubstitution(char a, char b) {
+        return a == b ? 0 : 1;
     }
 
-    public static int min(int... numbers) {
-        int min = Integer.MAX_VALUE;
-
-        for (int x : numbers) {
-            if (x < min)
-                min = x;
-        }
-
-        return min;
+    static int min(int... numbers) {
+        return Arrays.stream(numbers)
+          .min().orElse(Integer.MAX_VALUE);
     }
 }
diff --git a/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceDynamicProgramming.java b/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceDynamicProgramming.java
index 163714002b..1f8824c4f4 100644
--- a/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceDynamicProgramming.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceDynamicProgramming.java
@@ -2,7 +2,7 @@ package com.baeldung.algorithms.editdistance;
 
 public class EditDistanceDynamicProgramming extends EditDistanceBase {
 
-    public static int calculate(String x, String y) {
+    static int calculate(String x, String y) {
         int[][] dp = new int[x.length() + 1][y.length() + 1];
 
         for (int i = 0; i <= x.length(); i++) {
@@ -14,12 +14,13 @@ public class EditDistanceDynamicProgramming extends EditDistanceBase {
                     dp[i][j] = i;
 
                 else {
-                    dp[i][j] = min(dp[i - 1][j - 1] + costOfSubstitution(x.charAt(i - 1), y.charAt(j - 1)), dp[i - 1][j] + 1, dp[i][j - 1] + 1);
+                    dp[i][j] = min(dp[i - 1][j - 1]
+                        + costOfSubstitution(x.charAt(i - 1), y.charAt(j - 1)),
+                      dp[i - 1][j] + 1, dp[i][j - 1] + 1);
                 }
             }
         }
 
         return dp[x.length()][y.length()];
     }
-
 }
diff --git a/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceRecursive.java b/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceRecursive.java
index 68e470147e..8ed48dc554 100644
--- a/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceRecursive.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceRecursive.java
@@ -2,13 +2,15 @@ package com.baeldung.algorithms.editdistance;
 
 public class EditDistanceRecursive extends EditDistanceBase {
 
-    public static int calculate(String x, String y) {
+    static int calculate(String x, String y) {
 
-        if (x.isEmpty())
+        if (x.isEmpty()) {
             return y.length();
+        }
 
-        if (y.isEmpty())
+        if (y.isEmpty()) {
             return x.length();
+        }
 
         int substitution = calculate(x.substring(1), y.substring(1)) + costOfSubstitution(x.charAt(0), y.charAt(0));
         int insertion = calculate(x, y.substring(1)) + 1;
@@ -16,5 +18,4 @@ public class EditDistanceRecursive extends EditDistanceBase {
 
         return min(substitution, insertion, deletion);
     }
-
 }
diff --git a/algorithms/src/test/java/com/baeldung/algorithms/editdistance/EditDistanceTest.java b/algorithms/src/test/java/com/baeldung/algorithms/editdistance/EditDistanceTest.java
index 1594f73a73..bab2f480a5 100644
--- a/algorithms/src/test/java/com/baeldung/algorithms/editdistance/EditDistanceTest.java
+++ b/algorithms/src/test/java/com/baeldung/algorithms/editdistance/EditDistanceTest.java
@@ -1,16 +1,17 @@
 package com.baeldung.algorithms.editdistance;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 
+import static org.junit.Assert.assertEquals;
+
 @RunWith(Parameterized.class)
 public class EditDistanceTest extends EditDistanceDataProvider {
 
-    String x;
-    String y;
-    int result;
+    private String x;
+    private String y;
+    private int result;
 
     public EditDistanceTest(String a, String b, int res) {
         super();
@@ -21,11 +22,11 @@ public class EditDistanceTest extends EditDistanceDataProvider {
 
     @Test
     public void testEditDistance_RecursiveImplementation() {
-        Assert.assertEquals(result, EditDistanceRecursive.calculate(x, y));
+        assertEquals(result, EditDistanceRecursive.calculate(x, y));
     }
 
     @Test
     public void testEditDistance_givenDynamicProgrammingImplementation() {
-        Assert.assertEquals(result, EditDistanceDynamicProgramming.calculate(x, y));
+        assertEquals(result, EditDistanceDynamicProgramming.calculate(x, y));
     }
 }