Matrix programs

Author: sathishmepco

InterviewPrograms/src/com/java/matrix/IdentityMatrix.java

@@ -48,10 +48,10 @@ public static void main(String[] args) {
 				{0,0,1}
 				};*/
 		int row = 4;
-		int col = 4;
+		int column = 4;
 
-		//row and col should be same to make square matrix
-		if(row != col){
+		//row and column should be same to make square matrix
+		if(row != column){
 			System.out.println("Given matrix is NOT a Identity Matrix");
 			return;
 		}
@@ -65,7 +65,7 @@ public static void main(String[] args) {
 
 		//rest of the elements should be 0
 		for(int i=0;i<row;i++)
-			for(int j=0;j<col;j++)
+			for(int j=0;j<column;j++)
 				if(i != j && matrix[i][j] != 0){
 					System.out.println("Given matrix is NOT a Identity Matrix");
 					return;
@@ -77,40 +77,35 @@ public static void main(String[] args) {
 	}
 }
 /*
-	INPUT
+	OUTPUT
 	matrix[][] = {
 				{1,0,0,0},
 				{0,1,0,0},
 				{0,0,1,0},
 				{0,0,0,1}
 				};
-	OUTPUT
 	Given matrix is a Identity Matrix
 	
-	INPUT
+	OUTPUT
 	matrix[][] = {
 				{1,0,0},
 				{0,1,0},
 				{0,0,1},
 				};
-	OUTPUT
 	Given matrix is a Identity Matrix
 
-	INPUT
+	OUTPUT
 	matrix[][] = {
 				{1,1,1},
 				{0,1,1},
 				{1,0,1},
 				};
-	OUTPUT
 	Given matrix is NOT a Identity Matrix
 	
-	INPUT
+	OUTPUT
 	matrix[][] = {
 				{1,0,0},
 				{0,1,0}
 				};
-	OUTPUT
-	Given matrix is NOT a Identity Matrix
-	
+	Given matrix is NOT a Identity Matrix	
 */

InterviewPrograms/src/com/java/matrix/MatrixAddition.java

@@ -70,11 +70,13 @@ static void display(int matrix[][],int rows,int columns){
 	5 6 7 8 
 	9 10 11 12 
 	13 14 15 16 
+	
 	Matrix B is ::
 	5 10 15 20 
 	25 30 35 40 
 	45 50 55 60 
 	65 70 75 80
+	
 	OUTPUT 
 	Addition of two matrix is ::
 	6 12 18 24 
@@ -86,10 +88,12 @@ static void display(int matrix[][],int rows,int columns){
 	Matrix A is ::
 	1 2 3 4 
 	5 6 7 8
+	
 	Matrix B is ::
 	5 10 15
 	20 25 30  
 	35 40 45 
+	
 	OUTPUT
 	Addition is not possible
 	

InterviewPrograms/src/com/java/matrix/MatrixMultiplication.java

@@ -82,6 +82,7 @@ static void display(int matrix[][],int rows,int columns){
 	}
 }
 /*
+	OUTPUT
 	Matrix A is :: 
 	1 1 
 	2 2 

InterviewPrograms/src/com/java/matrix/SparseMatrix.java

@@ -3,10 +3,8 @@
 /*
  * Sparse Matrix
  * 
- * First count the number of zero elements in 
- * the matrix. 
- * Then calculate the size of the
- * matrix (row*column).
+ * First count the number of zero elements in the matrix. 
+ * Then calculate the size of the matrix (row*column).
  * 
  * For the matrix to be Sparse Matrix,
  * count of the zero elements should be greater