Changed private to protected for future overloading

src/main/java/com/mattrixwv/matrix/IntegerMatrix.java

@@ -13,10 +13,10 @@ import com.mattrixwv.matrix.exceptions.InvalidRowSizeException;
 
 
 public class IntegerMatrix{
-	private int[][] grid;
+	protected int[][] grid;
 
 	//Helper functions
-	private void setGrid(int[][] grid){
+	protected void setGrid(int[][] grid){
 		if(grid.length == 0){
 			grid = new int[0][0];
 		}
@@ -44,7 +44,7 @@ public class IntegerMatrix{
 			this.grid = newGrid;
 		}
 	}
-	private int[][] copyGrid(){
+	protected int[][] copyGrid(){
 		//Allocate memory for the new grid
 		int[][] newGrid = new int[grid.length][grid[0].length];
 
@@ -58,7 +58,7 @@ public class IntegerMatrix{
 		//Return the new grid
 		return newGrid;
 	}
-	private boolean isSquare(){
+	protected boolean isSquare(){
 		if(getNumRows() == 0){
 			return false;
 		}
@@ -67,7 +67,7 @@ public class IntegerMatrix{
 		}
 	}
 	//Returns a matrix with the supplied row and column removed
-	private IntegerMatrix laplaceExpansionHelper(int row, int col){
+	protected IntegerMatrix laplaceExpansionHelper(int row, int col){
 		//Make sure the matrix is square
 		if(!isSquare()){
 			throw new InvalidGeometryException("A matrix must be square for you to perform Laplace Expansion");