Hi, guys
I want to create a method that would return an array of binary numbers for a given size.
Say, for example I want to know all possible possible binary numbers of 4 digits, that method should return numbers (or strings) from 0000, 0001 ... to 1111.
I really cant think of anything, right now, maybe there is a method in java or something. Or maybe somebody can give me a hint.
Thanks,
Val.
FYI: in general, numbers are in the binary number system in digital computers. So "generating an array of binary numbers" doesn't really make any sense... Here's some code that doesn't work correctly:String[] getBinaryNumbers(int length) {
int max = (int)(Math.pow(2,length) + .1);
String[] s = new String[max];
for (int a = 0; a < max; a++)
s[a] = Integer.toBinaryString(a);
return s;
}
It doesn't work correctly because it doesn't pad the numbers with 0's to produce eg. "0010".
public String[] getBinStrings( int numDigits) {
int numElements = (int)java.lang.Math.pow(2,numDigits);
String[] binaryStrings = new String[numElements];
for( int j = 0; j < numElements; j++ ) {
binaryStrings[j] = Integer.toBinaryString(j);
}
return binaryStrings;
}
