Is there a better way to get bit[] from binary string
e.g.
Let say I want bits from index=3 up to length (len=5)
BinaryString = 10011000000000010000111110000001
Expected Result = 11000
This is what I have so far.
Method 1
public void getBits1(){
int idx = 3;
int len = 5;
String binary = new BigInteger("98010F81", 16).toString(2);
char[] bits = binary.toCharArray();
String result = "";
//check here: to make sure len is not out of bounds
if(len + idx > binary.length())
return; //error
for(int i=0; i<len; i++){
result = result + bits[idx];
idx++;
}
//original
System.out.println(binary);
//result
System.out.println(result);
}
Method 2
public void getBits2(){
int idx = 3;
int len = 5;
String binary = new BigInteger("98010F81", 16).toString(2);
String result = binary.substring(idx, len+idx);
//original
System.out.println(binary);
//result
System.out.println(result);
}
