Java: Print a unique character in a string

Question

I\'m writing a program that will print the unique character in a string (entered through a scanner). I\'ve created a method that tries to accomplish this but I keep getting

Answer 1

This is an interview question. Find Out all the unique characters of a string. Here is the complete solution. The code itself is self explanatory.

public class Test12 {
    public static void main(String[] args) {
        String a = "ProtijayiGiniGina";

        allunique(a);
    }

    private static void allunique(String a) {
        int[] count = new int[256];// taking count of characters
        for (int i = 0; i < a.length(); i++) {
            char ch = a.charAt(i);
            count[ch]++;
        }

        for (int i = 0; i < a.length(); i++) {
            char chh = a.charAt(i);
            // character which has arrived only one time in the string will be printed out
            if (count[chh] == 1) {
                System.out.println("index => " + i + " and unique character => " + a.charAt(i));

            }
        }

    }// unique

}

In Python :

def firstUniqChar(a):
    count = [0] *256
    for i in a: count[ord(i)] += 1
    element = ""

    for item in a:
        if (count[ord(item)] == 1):
            element = item;
            break;
    return element        


a = "GiniGinaProtijayi";
print(firstUniqChar(a)) # output is P