encrypt sth

package com.Olympiad2016;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

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

        while (true) {
            String inputStart = console.nextLine();

            if (inputStart.equals("START") || inputStart.equals("start")) {
                break;
            }
        }

        int check = 0;

        ArrayList<String> ar = new ArrayList<>();
        ArrayList<String> output = new ArrayList<>();

        while (true) {
            String input = console.nextLine();

            if (input.equals("END") || input.equals("end")) {
                break;
            }
            int plus = 0;

            if (input.equals("")) {
                continue;
            }
            check++;
            for (char c : input.toCharArray()) {
                int assci = (int) c;
                // For the digits 0 -> 1
                if (assci >= 48 && assci <= 57) {
                    plus = assci;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                    // For upperCase letters A -> M
                }
                if (assci >= 65 && assci <= 77) {
                    plus = assci + 13;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                    // For lowerCase letters a -> m
                } else if (assci >= 97 && assci <= 109) {
                    plus = assci + 13;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                    // For upperCase letters N -> Z
                } else if (assci >= 78 && assci <= 90) {
                    plus = assci - 13;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                    // For lowerCase letters n -> a
                } else if (assci >= 110 && assci <= 122) {
                    plus = assci - 13;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                    // For the special characters
                } else if (assci == 32) {
                    plus = 43;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 44) {
                    plus = 37;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 46) {
                    plus = 38;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 63) {
                    plus = 35;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 33) {
                    plus = 36;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 43) {
                    plus = 32;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 37) {
                    plus = 44;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 38) {
                    plus = 46;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 35) {
                    plus = 63;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                } else if (assci == 36) {
                    plus = 33;
                    char nextPlus = (char) plus;
                    String result = Character.toString(nextPlus);
                    ar.add(result);
                }
            }

            Collections.reverse(ar);

            String listString = "";

            for (String s : ar) {
                listString += s + "";
            }

            output.add(listString);

            ar.removeAll(ar);
        }
        if (check == 0) {
            System.out.println("No messages sent.");
        } else {
            System.out.println("Total number of messages: " + check);
        }

        for (String string : output) {
            System.out.println(string);
        }
    }
}