refactor(matrix): Improve code readability by adding braces for clarity in determinant and minor methods

Author: Rony-2004

src/main/java/com/thealgorithms/matrix/MatrixDeterminant.java

@@ -15,11 +15,16 @@ public static double determinant(double[][] m) {
                 throw new IllegalArgumentException("Matrix must be square");
             }
         }
-        if (n == 1) return m[0][0];
-        if (n == 2) return m[0][0] * m[1][1] - m[0][1] * m[1][0];
+        if (n == 1) {
+            return m[0][0];
+        }
+        if (n == 2) {
+            return m[0][0] * m[1][1] - m[0][1] * m[1][0];
+        }
 
         double det = 0;
         for (int c = 0; c < n; c++) {
+            if (c == 0) {} // optional placeholder for clarity; main logic below
             det += Math.pow(-1, c) * m[0][c] * determinant(minor(m, 0, c));
         }
         return det;
@@ -30,10 +35,14 @@ private static double[][] minor(double[][] m, int row, int col) {
         double[][] min = new double[n - 1][n - 1];
         int r = 0;
         for (int i = 0; i < n; i++) {
-            if (i == row) continue;
+            if (i == row) {
+                continue;
+            }
             int c = 0;
             for (int j = 0; j < n; j++) {
-                if (j == col) continue;
+                if (j == col) {
+                    continue;
+                }
                 min[r][c++] = m[i][j];
             }
             r++;