checkstyle: fix formatting

Author: alxkm

src/test/java/com/thealgorithms/maths/DeterminantOfMatrixTest.java

@@ -8,67 +8,43 @@ public class DeterminantOfMatrixTest {
 
     @Test
     public void testDeterminant2x2Matrix() {
-        int[][] matrix = {
-                {1, 2},
-                {3, 4}
-        };
+        int[][] matrix = {{1, 2}, {3, 4}};
         int expected = -2;
         assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 2));
     }
 
     @Test
     public void testDeterminant3x3Matrix() {
-        int[][] matrix = {
-                {1, 2, 3},
-                {4, 5, 6},
-                {7, 8, 9}
-        };
+        int[][] matrix = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
         int expected = 0;
         assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 3));
     }
 
     @Test
     public void testDeterminant3x3MatrixNonZero() {
-        int[][] matrix = {
-                {1, 2, 3},
-                {0, 1, 4},
-                {5, 6, 0}
-        };
+        int[][] matrix = {{1, 2, 3}, {0, 1, 4}, {5, 6, 0}};
         int expected = 1;
         assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 3));
     }
 
     @Test
     public void testDeterminant1x1Matrix() {
-        int[][] matrix = {
-                {7}
-        };
+        int[][] matrix = {{7}};
         int expected = 7;
         assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 1));
     }
 
     @Test
     public void testDeterminant4x4Matrix() {
-        int[][] matrix = {
-                {1, 0, 0, 1},
-                {0, 1, 0, 0},
-                {0, 0, 1, 0},
-                {1, 0, 0, 1}
-        };
+        int[][] matrix = {{1, 0, 0, 1}, {0, 1, 0, 0}, {0, 0, 1, 0}, {1, 0, 0, 1}};
         int expected = 0;
         assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 4));
     }
 
     @Test
     public void testDeterminant4x4MatrixZero() {
-        int[][] matrix = {
-                {1, 2, 3, 4},
-                {5, 6, 7, 8},
-                {9, 10, 11, 12},
-                {13, 14, 15, 16}
-        };
+        int[][] matrix = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
         int expected = 0;
         assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 4));
     }
 }
-