javascript 데이터 구조 [목록]

1. 리스트

//         
function List(){
    /**
    *        
    *listSize        
    *pos        
    *length()           
    *clear()           
    *toString()           
    *getElement()          
    *insert()            
    *append()            
    *remove()         
    *front()                 
    *end()                  
    *prev()          
    *next()          
    *currPos()          
    *moveTo()             
    **/
    this.listSize = 0;
    this.pos = 0;
    this.dataStore = [];
    this.clear = clear;
    this.find = find;
    this.toString = toString;
    this.insert = insert;
    this.append = append;
    this.remove = remove;
    this.front = front;
    this.end = end;
    this.prev = prev;
    this.next = next;
    this.length = length;
    this.currPos = currPos;
    this.moveTo = moveTo;
    this.getElement = getElement;
    this.contains = contains;
}

//       
function appand(element){
  this.dataStore[this.listSize++] = element;
}
//          
function find(element){
  for(var i = 0;  i < this.dataStore.length; i++ ){
     if(this.dataStore[i] === element){
         return i;
     }
  }
  return -1;
}    
  
//        
function remove(element){
  var foundAt = this.find(element);
  if(foundAt > -1){
    this.dataStore.splice(foundAt,1);
    this.listSize--;
    return true;
  }
 return false;
}

//          
function length(){
  return this.listSize;
}

//        
function toString(){
  return this.dataStore;
}

//          
function insert(element,after){
  var insertPos = this.find(after);
  if(insertPos > -1){
    this.dataStore.splice(insertPos,0,element);
    this.listSize++;
   return true;
  }
 return false;
}

//          
function remove(){
  delete this.dataStore;
  this.dataStore = [];
  this.listSize = this.pos = 0;
}

//            
function contains(element){
  for(var i = 0; i < this.dataStore.length; i++){
    if(this.dataStore[i] === element){
      return true;
    }
  }
 return false;
}
//        
function front(){
  this.pos = 0;
}

//         
function end(){
  this.pos =  this.listSize - 1;
}

//      
function prev(){
  if(this.pos > 0){
    this.pos--;
  }
}

//      
function next(){
  if(this.pos < this.listSize - 1){
    this.pos++；
  }
}

//    
function currPos(){
  return this.pos;
}

//       
function moveTo(position){
  this.pos = position;
}

//      
function getElement(){
   return this.dataStore[this.pos]; 
}