XOR operation with two strings in java

Question

How to do bitwise XOR operation to two strings in java.

Answer 1

the abs function is when the Strings are not the same length so the legth of the result will be the same as the min lenght of the two String a and b

public String xor(String a, String b){
    StringBuilder sb = new StringBuilder();
    for(int k=0; k < a.length(); k++)
       sb.append((a.charAt(k) ^ b.charAt(k + (Math.abs(a.length() - b.length()))))) ;
       return sb.toString();
}