Hi guys need some help with SwitchDebounce and StateChangedetection

Using Arduino Programming Questions
8

Guys I got this to work, and interestingly the first time around it work only that i have press the switch twice to make it work.

uint8_t Switch = 2;
uint8_t Led =13;

boolean LedState =LOW;
int SwitchState =0;
int SwitchDebounce;
int LastSwitchState=HIGH;
int LastSwitchDebounce=LOW;

unsigned long LastDebounceTime = 0;
unsigned long DebounceDelay = 50;

void setup()
{
  pinMode(Switch,INPUT);
  digitalWrite(Switch,HIGH);
  pinMode(Led,OUTPUT);
}

void loop() 
{
  int CurrentSwitch = digitalRead(Switch);
  if (CurrentSwitch != LastSwitchDebounce)
  {
    LastDebounceTime = millis();
  } 
  if ((millis() - LastDebounceTime) > DebounceDelay) 
  {
    SwitchDebounce = CurrentSwitch;
    SwitchState = digitalRead(Switch);
    if (SwitchState != LastSwitchState) 
    {
      if (SwitchState == LOW)
      {
        LedState = !LedState;
      } 
    }
    LastSwitchState=SwitchState;
  }
  digitalWrite(Led,LedState);
  LastSwitchDebounce = CurrentSwitch;
}

Hope you guys could give me some other pointer that i could use to make it more efficient?

i Saw some of the reply saying i could use a library. yes i have Debounce and Bounce library but by using the library i fail to understand how it work only that i know that it work. nothing more then some educational purpose.