isUniqueString

import java.io.*;
import java.util.*;

/*
 * To execute Java, please define "static void main" on a class
 * named Solution.
 *
 * If you need more classes, simply define them inline.
 */

class Solution {
  
  static boolean isUniqueASCII(String input) {
    if(input.length()>256)
      return false;
    int checker = 0;
    for(int i=0;i<input.length();i++) {
      int c = input.charAt(i);
      System.out.println(c);
      System.out.println(1<<c);
      
      if((checker & (1<<c))>0)
        return false;
      checker = checker | (1<<c);
    }
    return true;
    
  }
  
  public static boolean isUniqueChars(String str) {
    long checker1 = 0;
    long checker2 = 0;
    long checker3 = 0;
    long checker4 = 0;
    for (int i = 0; i < str.length(); ++i) {
        int val = str.charAt(i);
        int toCheck = val / 64;
        val %= 64;
      System.out.println(1L<<val);
        switch (toCheck) {
            case 0:
                if ((checker1 & (1L << val)) > 0) {
                    return false;
                }
                checker1 |= (1L << val);
                break;
            case 1:
                if ((checker2 & (1L << val)) > 0) {
                    return false;
                }
                checker2 |= (1L << val);
                break;
            case 2:
                if ((checker3 & (1L << val)) > 0) {
                    return false;
                }
                checker3 |= (1L << val);
                break;
            case 3:
                if ((checker4 & (1L << val)) > 0) {
                    return false;
                }
                checker4 |= (1L << val);
                break;
        }            
    }return true;
  }
  
  public static boolean isUnique(String str) {
    int checker1 = 0;
    int checker2 = 0;
    int checker3 = 0;
    int checker4 = 0;
    for (int i = 0; i < str.length(); ++i) {
        int val = str.charAt(i);
        int toCheck = val / 32;
        val %= 32;
      System.out.println(1L<<val);
        switch (toCheck) {
            case 0:
                if ((checker1 & (1 << val)) > 0) {
                  return false;
                  
                }
                checker1 |= (1 << val);
                break;
            case 1:
                if ((checker2 & (1 << val)) > 0) {
                    return false;
                }
                checker2 |= (1 << val);
                break;
            case 2:
                if ((checker3 & (1 << val)) > 0) {
                    return false;
                }
                checker3 |= (1 << val);
                break;
            case 3:
                if ((checker4 & (1 << val)) > 0) {
                    return false;
                }
                checker4 |= (1 << val);
                break;
        }            
    }return true;
  }
  
  public static void main(String[] args) {
    ArrayList<String> strings = new ArrayList<String>();
    strings.add("Hello, World!");
    strings.add("Welcome to CoderPad.");
    strings.add("This pad is running Java 8.");

    for (String string : strings) {
      System.out.println(string);
    }
    
    System.out.println(isUnique("a b a"));
    
    
  }
}