con binaryNumber = null return 0.
package en.codegym.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 = null;
System.out.println("Binary number " + binaryNumber + " is equal to decimal number " + toDecimal(binaryNumber));
}
public static String toBinary(int decimalNumber) {
//write your code here
String binario = "";
if(decimalNumber <= 0) {
return binario;
}
else
{
while(decimalNumber != 0)
{
binario = String.valueOf((decimalNumber % 2)) + binario;
decimalNumber = decimalNumber / 2;
}
}
return binario;
}
public static int toDecimal(String binaryNumber) {
//write your code here
int decimal = 0;
if(binaryNumber == null || binaryNumber.isEmpty())
{
return 0;
}
else
{
for(int i = 0; i < binaryNumber.length(); i++)
{
decimal = decimal + Character.getNumericValue(binaryNumber.charAt(i)) * (int)Math.pow(2,i);
}
}
return decimal;
}
}