public class Solution {
public static void main(String[] args) {
int decimalNumber = Integer.MAX_VALUE;
System.out.println("Decimal number " + decimalNumber + " is equal to binary number " + toBinary(decimalNumber));
String binaryNumber = "1111111111111111111111111111111";
System.out.println("Binary number " + binaryNumber + " is equal to decimal number " + toDecimal(binaryNumber));
}
public static String toBinary(int decimalNumber) {
//write your code here
final int D = 2;
String binSymbol = null;
String bin = "";
if (decimalNumber > 0) {
while (decimalNumber > 0) {
int j = decimalNumber % D;
binSymbol = String.valueOf(j);
bin = binSymbol + bin;
decimalNumber = decimalNumber / D;
}
return bin;
}
else return null;
}
public static int toDecimal(String binaryNumber) {
//write your code here
final int D = 2;
double dec = 0;
int i = 0;
int len = binaryNumber.length();
if (binaryNumber != null || binaryNumber != "") {
while (i < len) {
char j = binaryNumber.charAt(i);
int number = Character.getNumericValue(j);
dec = dec + number * Math.pow(2, (len - i - 1));
i++;
}
return (int) dec;
}
else return 0;
}
}
package en.javarush.task.pro.task09.task0906;
/*
Binary converter
*/
public class Solution {
public static void main(String[] args) {
int decimalNumber = Integer.MAX_VALUE;
System.out.println("Decimal number " + decimalNumber + " is equal to binary number " + toBinary(decimalNumber));
String binaryNumber = "1111111111111111111111111111111";
System.out.println("Binary number " + binaryNumber + " is equal to decimal number " + toDecimal(binaryNumber));
}
public static String toBinary(int decimalNumber) {
//write your code here
final int D = 2;
String binSymbol = null;
String bin = "";
if (decimalNumber > 0) {
while (decimalNumber > 0) {
int j = decimalNumber % D;
binSymbol = String.valueOf(j);
bin = binSymbol + bin;
decimalNumber = decimalNumber / D;
}
return bin;
}
else
{
return null;
}
}
public static int toDecimal(String binaryNumber) {
//write your code here
final int D = 2;
double dec = 0;
int i = 0;
int len = binaryNumber.length();
if (binaryNumber != null || binaryNumber != "") {
while (i < len) {
char j = binaryNumber.charAt(i);
int number = Character.getNumericValue(j);
dec = dec + number * Math.pow(2, (len - i - 1));
i++;
}
return (int) dec;
}
else
{
return 0;
}
}
}