package CharCheck;

import java.util.HashMap;
import java.util.Map;

public class CheckChar {
    Map<Character, Integer> charMap = new HashMap<Character, Integer>();
    int uniqueCount = 0;

    public static void main(String[] args) {
        String stringToCheck = "checking to char array method";
        CheckChar collector = new CheckChar();
        collector.charMap("checking to char array method");
        collector.showCharSum();
        collector.showUnique();
    }

    private void showCharSum() {
        System.out.println("Chars entry count");
        charMap.forEach((k, v) ->
            System.out.println("Key: " + k + " -> Value: " + v)
        );
    }

    private void showUnique() {
        System.out.println("Which char is unique: ");
        charMap.forEach((k, v) -> {
            if (v < 2) {
                System.out.println("Key: " + k + " -> Unique");
                uniqueCount++;
            }
        });
        System.out.println("How many unique chars: " + uniqueCount);
    }

    private void charMap(String stringToCheck){
        System.out.println();
        char[] charArray = stringToCheck.toCharArray();
        for (char temp : charArray) {
            if (charMap.get(temp) != null) {
                int nVal = charMap.get(temp) + 1;
                charMap.put(temp, nVal);
                System.out.println("add to " + temp + " +1");
            } else {
                charMap.put(temp, 1);
                System.out.println("add new " + temp + " & val 1");
            }
        }
    }
}