StringManipulator_gr2

import java.util.Objects;
import java.util.Scanner;

public class StringManipulator1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String textInput = scanner.nextLine();

        StringBuilder text = new StringBuilder();

        String command = scanner.nextLine();
        while (!command.equals("Done")){
            String[] com = command.split(" ");
            switch (com[0]){
                case "Change":
                    char searchChar = com[1].charAt(0);
                    char replaceChar = com[2].charAt(0);
                    for(int i = 0; i <= textInput.length() -1; i++){
                        char ch = textInput.charAt(i);
                        if (ch == searchChar) {
                            ch = replaceChar;
                        }
                        text.append(ch);
                    }
                    System.out.println(text);
                    break;
                case "Includes":
                    String checkIncluding = com[1];
                    if(text.toString().contains(checkIncluding)){
                        System.out.println("True");
                    } else {
                        System.out.println("False");
                    }
                    break;
                case "End":
                    String end = com[1];
                    int length = end.length();
                    String substringOfText = text.substring(text.length() - length, text.length() - 1);
                    if (substringOfText.equals(end)) {
                        System.out.println("True");
                    } else {
                        System.out.println("False");
                    }
                    break;
                case "Uppercase":
                    StringBuilder toUpperCase = new StringBuilder();
                    char[] textToArray = text.toString().toCharArray();
                    for(int i = 0; i < textToArray.length; i++){
                        char currChar = textToArray[i];
                        if(Character.isLowerCase(textToArray[i])){
                            currChar = Character.toUpperCase(currChar);
                        }
                        toUpperCase.append(currChar);
                    }
                    text = toUpperCase;
                    System.out.println(text);
                    break;
                case "FindIndex":
                    char findChar = com[1].charAt(0);
                    for (int i = 0; i <= text.length() - 1; i++) {
                        char ch = text.charAt(i);
                        if (ch == findChar) {
                            System.out.println(i);
                            break;
                        }
                    }
                    break;
                case "Cut":
                    int startCutIndx = Integer.parseInt(com[1]);
                    int lengthToCut = Integer.parseInt(com[1]);
                    String substringCutted = text.substring(startCutIndx, startCutIndx + lengthToCut);
                    System.out.println(substringCutted);
                    break;
            }
            command = scanner.nextLine();
        }
    }
}