[Java] String to Array, String to Char

1. String to Array

for(int i = 0; i < maxLength; i++)
            if(!binaryA.split("")[i].equals(binaryB.split("")[i]))
                hammingDistance += 1;

 

2. String to Char

public int solution(String expression) {
        int expIndex = func_b(expression);
        Pair numbers = func_c(expression, expIndex);
        int result = func_a(numbers.firstNum, numbers.secondNum, expression.charAt(expIndex));
        return result;
    }