String input;                  //first lab

void setup() {
Serial.begin(9600);
}

void loop() {
 while(Serial.available()==0){}
   input=Serial.readString();


   int numsize=input.length();

   char Str[numsize];     //array to store the digits of the input
   int i;
   for(i=0;i<numsize;i++){
    Str[i]=input.charAt(i);
   }

   input.remove(0,1);
   Serial.println(input);
}
////////////////////////////////////////////////////////////



String input;  //the user input              //second lab

void setup() {
 Serial.begin(9600);
 pinMode(13,OUTPUT);

}

void loop() {

   while(Serial.available()==0){}
   input=Serial.readString();
   if(input.charAt(0)=='-'){
    input.remove(0,1);         //remove sign
   }

   int numsize=input.length();

   char Str[numsize];     //array to store the digits of the input
   int i;
   for(i=0;i<numsize;i++){
    Str[i]=input.charAt(i);
   }

  int f;
   for(f=0;f<=numsize;f++){
    int flag=1;  //to check if palindrome
    int j;
    char sub[f];    //subarray of Str[]

    for(j=0;j<sizeof(sub);j++){     //store the first f elements of Str[] in sub[]
      sub[j]=Str[j];
    }



    for(j=0;j<sizeof(sub)/2;j++){    //check that sub[] is palindrome
    if(sub[j]!=sub[sizeof(sub)-j-1]){ flag=0;break; }
    }

    Serial.print(flag);
    if(flag==0){
      digitalWrite(13,LOW);
      delay(1000);
    }
    else if(flag==1){
      digitalWrite(13,HIGH);
      delay(1000);
      digitalWrite(13,LOW);
      delay(1000);
    }


   }


   Serial.println();

}
///////////////////////////////////////////////////////


String input;  //the user input                    //third lab

void setup() {

    pinMode(13,OUTPUT);
    Serial.begin(9600);

}

void loop() {



   while(Serial.available()==0){}
    input=Serial.readString();
    char word[input.length()];   //array to store the characters of the input
    String morse;
    int i;
    for(i=0;i<input.length();i++){
      word[i]=input.charAt(i);
      if(isWhitespace(word[i])){
        morse+='w';                        //'w' is used to separate between words
      }
      else{
      morse+=convertToMorse(word[i])+'/';    //create the morse code of the whole input, '/' is used to separate between letters
      }
    }



   char morseChar[morse.length()];    //array to store the characters of morse
   for(i=0;i<morse.length();i++){
      morseChar[i]=morse.charAt(i);
      if(morseChar[i]=='.'){
        digitalWrite(13,HIGH);
        delay(300);
        digitalWrite(13,LOW);
        delay(300);
      }
      else if(morseChar[i]=='-'){
        digitalWrite(13,HIGH);
        delay(1000);
        digitalWrite(13,LOW);
        delay(300);
      }
      else if(morseChar[i]=='/'){
        digitalWrite(13,LOW);
        delay(1000);
      }
      else if(morseChar[i]=='w'){
        digitalWrite(13,LOW);
        delay(2100);
      }
   }



}


 String convertToMorse(char a){      //convert each character to its morse code
      switch(a){
        case 'A': return ".-"; break;
        case 'B': return "-..."; break;
        case 'C': return "-.-."; break;
        case 'D': return "-.."; break;
        case 'E': return"."; break;
        case 'F': return"..-."; break;
        case 'G': return"--."; break;
        case 'H': return"...."; break;
        case 'I': return".."; break;
        case 'J': return".---"; break;
        case 'K': return"-.-"; break;
        case 'L': return".-.."; break;
        case 'M': return"--"; break;
        case 'N': return"-."; break;
        case 'O': return"---"; break;
        case 'P': return".--."; break;
        case 'Q': return"--.-"; break;
        case 'R': return".-."; break;
        case 'S': return"..."; break;
        case 'T': return"-"; break;
        case 'U': return"..-"; break;
        case 'V': return"...-"; break;
        case 'W': return".--"; break;
        case 'X': return"-..-"; break;
        case 'Y': return"-.--"; break;
        case 'Z': return"--.."; break;
        case '0': return"-----"; break;
        case '1': return".----"; break;
        case '2': return"..---"; break;
        case '3': return"...--"; break;
        case '4': return"....-"; break;
        case '5': return"....."; break;
        case '6': return"-...."; break;
        case '7': return"--..."; break;
        case '8': return"---.."; break;
        case '9': return"----."; break;
        default: return;break;
      }
    }