var Stack = function(){
var items = []
//由后向前存储元素
this.push=(element)=>{
items.push(element)
}
//由后向前取出元素
this.pop=()=>{
return items.pop()
}
//判断是否为空
this.isEmpty=()=>{
return !items.length>0
}
//得到元素的大小
this.size=()=>{
return items.length
}
this.getitem=()=>{
return items
}
}
//10进制转2进制
var ChangeTow=function(number){
var strs = ''
var stack = new Stack()
while(number>0){
var curren = number%2
stack.push(curren)
number = Math.floor(number/2)
}
while(!stack.isEmpty()){
strs+=stack.pop()
}
return strs
}