Refactor files to be in correctly nested packages (#6120)

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

@@ -0,0 +1,46 @@
+package com.thealgorithms.matrix;
+
+/**
+ *
+ *
+ * <h1>Find the Transpose of Matrix!</h1>
+ *
+ * Simply take input from the user and print the matrix before the transpose and
+ * after the transpose.
+ *
+ * <p>
+ * <b>Note:</b> Giving proper comments in your program makes it more user
+ * friendly and it is assumed as a high quality code.
+ *
+ * @author Rajat-Jain29
+ * @version 11.0.9
+ * @since 2014-03-31
+ */
+public final class MatrixTranspose {
+    private MatrixTranspose() {
+    }
+
+    /**
+     * Calculate the transpose of the given matrix.
+     *
+     * @param matrix The matrix to be transposed
+     * @throws IllegalArgumentException if the matrix is empty
+     * @throws NullPointerException     if the matrix is null
+     * @return The transposed matrix
+     */
+    public static int[][] transpose(int[][] matrix) {
+        if (matrix == null || matrix.length == 0) {
+            throw new IllegalArgumentException("Matrix is empty");
+        }
+
+        int rows = matrix.length;
+        int cols = matrix[0].length;
+        int[][] transposedMatrix = new int[cols][rows];
+        for (int i = 0; i < cols; i++) {
+            for (int j = 0; j < rows; j++) {
+                transposedMatrix[i][j] = matrix[j][i];
+            }
+        }
+        return transposedMatrix;
+    }
+}