package org.softuni.whileloop.exercise;

import java.util.Scanner;

public class StreamOfCharacters {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        // these will keep track of whether we have encountered the "magic" chars
        boolean c = false;
        boolean o = false;
        boolean n = false;

        String nextWord = "";

        String nextLine = scanner.nextLine();
        while (!"End".equals(nextLine)) {
            // we will be reading lines until the "End" command is entered

            char nextChar = nextLine.charAt(0);
            // the input is converted to char by taking the first letter of the input string
            // in this case the input only has one letter, so we take it

            if ((nextChar >= 'A' && nextChar <= 'Z') || (nextChar >= 'a' && nextChar <= 'z')) {
                // this is how we check if nextChar is a latin letter
                if (Character.isAlphabetic(nextChar)) {
                    // that is another, easier way to to the same thing
                    // it`s ok to be in a nested if-statement because they do the same thins
                    // if one is true the other will be true as well

                    if (nextChar == 'c' && !c) { // in nextChar is c, we check if we have encountered it yet
                        c = true; // if not, we change the boolean that tracks that to true and do nothing further
                    } else if (nextChar == 'o' && !o) {
                        o = true; //  the same goes for the other two chars
                    } else if (nextChar == 'n' && !n) {
                        n = true;
                    } else { // in all other cases we append the nextChar to out word
                        nextWord += nextChar;
                    }
                }
            }
            if (c && o && n) { // if we have encountered all three chars, we print out word and reset out tracker variables as well as the word itself
                System.out.print(nextWord + " ");
                c = false;
                o = false;
                n = false;
                nextWord = "";
            }

            nextLine = scanner.nextLine();
            // do not forget to read a new line at the end of the while loop
        }
    }
}