title: Bloom Filter char based
body: <p>I am new to Bloom Filter. I understand how to implement a Bloom Filter with bit array, which we hash value x with k hash functions and set each bit array index to 1. </p>
  
  <p>But I am wondering how we are going to implement a Bloom Filter with a char array? Especially if the input is a string. One way I can think of is adding the ASCII value of each char of string and hash that value then set index of char array to some value (I am also not sure what value to set in char array if I use this method because it can't be just 0 or 1 since we are not using bit array), but the probability of false positive is going to be very high. May someone give me some ideas to get the start? (I do not need actual code, but I really appreciate if you can give me some insight on what hash function to use and how to map them into char array)</p>