Update MatrixRowPermutationTest.java

Author: Suraj-1309

src/test/java/com/thealgorithms/matrix/MatrixRowPermutationTest.java

@@ -4,19 +4,16 @@
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-import java.util.List;
 import java.util.Arrays;
+import java.util.List;
 
 import org.junit.jupiter.api.Test;
 
 public class MatrixRowPermutationTest {
 
     @Test
     void testPermute2x2Matrix() {
-        int[][] matrix = {
-            {1, 2},
-            {3, 4}
-        };
+        int[][] matrix = {{1, 2}, {3, 4}};
 
         List<int[][]> permutations = MatrixRowPermutation.permuteRows(matrix);
         assertEquals(2, permutations.size(), "Expected 2 permutations for 2x2 matrix");
@@ -28,7 +25,7 @@ void testPermute2x2Matrix() {
         for (int[][] perm : permutations) {
             if (Arrays.deepEquals(perm, matrix)) {
                 foundOriginal = true;
-            } else if (Arrays.deepEquals(perm, new int[][]{{3, 4}, {1, 2}})) {
+            } else if (Arrays.deepEquals(perm, new int[][] {{3, 4}, {1, 2}})) {
                 foundSwapped = true;
             }
         }
@@ -39,11 +36,7 @@ void testPermute2x2Matrix() {
 
     @Test
     void testPermute3x1Matrix() {
-        int[][] matrix = {
-            {1},
-            {2},
-            {3}
-        };
+        int[][] matrix = {{1}, {2}, {3}};
 
         List<int[][]> permutations = MatrixRowPermutation.permuteRows(matrix);
         assertEquals(6, permutations.size(), "Expected 6 permutations for 3x1 matrix");
@@ -62,9 +55,7 @@ void testNullMatrixThrowsException() {
 
     @Test
     void testSingleRowMatrix() {
-        int[][] matrix = {
-            {42, 99}
-        };
+        int[][] matrix = {{42, 99}};
 
         List<int[][]> permutations = MatrixRowPermutation.permuteRows(matrix);
         assertEquals(1, permutations.size(), "Expected 1 permutation for single-row matrix");