//by Nissanka MD SLCOTM
String incom_Msg;

void setup() {
  
  Serial.begin(9600);
  Serial.println("Enter the command");

}

void loop() {
 
 if(Serial.available()>0)
 {
  delay(50);
  Serial.print("Serial Message Size : ");
  Serial.println(Serial.available());
  incom_Msg = Serial.readString();
  Serial.print("Incomming Message : ");
  Serial.println(incom_Msg);
  Serial.print("Incomming Message Size : ");
  Serial.println(incom_Msg.length());
  incom_Msg.trim();
  Serial.print("Trimmed Message : ");
  Serial.println(incom_Msg);
  Serial.print("Trimmed Message Size : ");
  Serial.println(incom_Msg.length());

  while (incom_Msg.indexOf("  ") >= 0) {  // if double spaces present
  incom_Msg.replace("  ", " "); // double space replaced with single space
}
  Serial.print("Middle Duplicate Spaces Trimmed Message : ");
  Serial.println(incom_Msg);
  Serial.print("Middle Duplicate Spaces Trimmed Message Size : ");
  Serial.println(incom_Msg.length());



 }
 

}