String msg = "";
String v = "2-3-4-5-6-7-8-9";
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  msg = v[0]+v[2]+v[4];
  Serial.println(msg);
  v.replace("-","");
  Serial.println(v);
  if (v.compareTo("23456789") == 0) {
    Serial.println("EQ");
  } else {
    Serial.println("NOT");
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}