QuestionAsk Questions?
Abhishek Sisodia
I am new in java programming. I am creating a two-dimensional array. This is my code
**
class BinaryNumbers
{
public static void main(String[] args)
{
//create a two-dimensional array
int ROWS = 21;
int COLS = 2;
int[][] a2 = new int[ROWS][COLS];
//... Print array in rectangular form
for (int i =0; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
System.out.print(" " + a2[i][j]);
}
System.out.println("");
}
}
}
I want to enter this data into this array
Decimal Binary
1 1
2 10
3 11
4 100
5 101
6 110
7 111
8 1000
9 1001
10 1010
11 1011
12 1100
13 1101
14 1110
15 1111
16 10000
17 10001
18 10010
19 10011
20 10100
how can i do this? Please help me
**
class BinaryNumbers
{
public static void main(String[] args)
{
//create a two-dimensional array
int ROWS = 21;
int COLS = 2;
int[][] a2 = new int[ROWS][COLS];
//... Print array in rectangular form
for (int i =0; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
System.out.print(" " + a2[i][j]);
}
System.out.println("");
}
}
}
I want to enter this data into this array
Decimal Binary
1 1
2 10
3 11
4 100
5 101
6 110
7 111
8 1000
9 1001
10 1010
11 1011
12 1100
13 1101
14 1110
15 1111
16 10000
17 10001
18 10010
19 10011
20 10100
how can i do this? Please help me
View Answers
February 22, 2010 at 12:48 PM
Hi Friend,
Try the following code:
class BinaryNumbers
{
static int ROWS = 20;
static int COLS = 2;
public static void main(String[] args){
int a2[][]={{1,1},{2,10},{3,11},{4,100},{5,101},{6,110},{7,111},{8,1000},{9,1001},{10,1010},{11,1011},
{12,1100},{13,1101},{14,1110},{15,1111},{16,10000},{17,10001},{18,10010},{19,10011},{20,10100}};
System.out.println("Decimal Binary");
for (int i =0; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
System.out.print(" " + a2[i][j]);
}
System.out.println("");
}
}
}
Thanks
Try the following code:
class BinaryNumbers
{
static int ROWS = 20;
static int COLS = 2;
public static void main(String[] args){
int a2[][]={{1,1},{2,10},{3,11},{4,100},{5,101},{6,110},{7,111},{8,1000},{9,1001},{10,1010},{11,1011},
{12,1100},{13,1101},{14,1110},{15,1111},{16,10000},{17,10001},{18,10010},{19,10011},{20,10100}};
System.out.println("Decimal Binary");
for (int i =0; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
System.out.print(" " + a2[i][j]);
}
System.out.println("");
}
}
}
Thanks
February 23, 2010 at 12:00 AM
Hey,
Here is the code which builds Binary Numbers dynamically where you need not give binary numbers explicitly. Just the decimal no. is sufficient.
public class BinaryNumbers {
public static void main(String[] args) {
int ROWS = 26;
int COLS = 2;
int[][] binaryArray = new int[ROWS][COLS];
for (int i = 1; i < ROWS; i++) {
String binaryNo = Integer.toBinaryString(i);
for (int j = 0; j < COLS - 1; j++) {
binaryArray[i][j] = i;
binaryArray[i][++j] = Integer.parseInt(binaryNo);
}
}
for (int i = 1; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
System.out.print(binaryArray[i][j] + " ");
}
System.out.println("");
}
}
}
Here is the code which builds Binary Numbers dynamically where you need not give binary numbers explicitly. Just the decimal no. is sufficient.
public class BinaryNumbers {
public static void main(String[] args) {
int ROWS = 26;
int COLS = 2;
int[][] binaryArray = new int[ROWS][COLS];
for (int i = 1; i < ROWS; i++) {
String binaryNo = Integer.toBinaryString(i);
for (int j = 0; j < COLS - 1; j++) {
binaryArray[i][j] = i;
binaryArray[i][++j] = Integer.parseInt(binaryNo);
}
}
for (int i = 1; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
System.out.print(binaryArray[i][j] + " ");
}
System.out.println("");
}
}
}
February 23, 2010 at 12:17 AM
Hi,
Here is another code same as above that prints binary numbers on the fly with little modification.
Just give how many no.of binary numbers you wanna print starting from 1 in the console.May seem complex, but easy..
import java.util.Scanner;
public class BinaryNumbers {
public static void main(String[] args) {
System.out
.println("Enter the no. of binary numbers you want to print : ");
Scanner scan = new Scanner(System.in);
int ROWS = scan.nextInt() + 1;
int[][] binary = new int[ROWS][];
for (int i = 1; i < ROWS; i++) {
String binaryNo = Integer.toBinaryString(i);
binary[i] = new int[2];
binary[i][0] = i;
binary[i][1] = Integer.parseInt(binaryNo);
}
/* Print Array */
for (int i = 1; i < ROWS; i++) {
System.out.println(binary[i][0] + " " + binary[i][1]);
}
}
}
Snippet of o/p:
Enter the no. of binary numbers you want to print :
40
1 1
2 10
3 11
4 100
.
.
.
38 100110
39 100111
40 101000
Regards,
javaquest2010
Here is another code same as above that prints binary numbers on the fly with little modification.
Just give how many no.of binary numbers you wanna print starting from 1 in the console.May seem complex, but easy..
import java.util.Scanner;
public class BinaryNumbers {
public static void main(String[] args) {
System.out
.println("Enter the no. of binary numbers you want to print : ");
Scanner scan = new Scanner(System.in);
int ROWS = scan.nextInt() + 1;
int[][] binary = new int[ROWS][];
for (int i = 1; i < ROWS; i++) {
String binaryNo = Integer.toBinaryString(i);
binary[i] = new int[2];
binary[i][0] = i;
binary[i][1] = Integer.parseInt(binaryNo);
}
/* Print Array */
for (int i = 1; i < ROWS; i++) {
System.out.println(binary[i][0] + " " + binary[i][1]);
}
}
}
Snippet of o/p:
Enter the no. of binary numbers you want to print :
40
1 1
2 10
3 11
4 100
.
.
.
38 100110
39 100111
40 101000
Regards,
javaquest2010
February 26, 2010 at 7:32 AM
Thank you very much every one
Related Pages:
If you are facing any programming issue, such as compilation errors or not able to find the code you are looking for.
Ask your questions, our development team will try to give answers to your questions.
Tutorial Topics
