用兩個棧來實現一個隊列，完成隊列的Push和Pop操作。 隊列中的元素為int類型...

以下為借鑒

var?stack1 = [], stack2=[];

function?push(node){

????stack1.push(node);

}

function?pop(){

????if(stack2.length){

????????return?stack2.pop();

????}else{

????????if(stack1.length){

????????????var?len = stack1.length;

????????????for(var?i=0;i<len;i++){

????????????????stack2.push(stack1.pop());

????????????}

????????????return?stack2.pop()

????????}else{

?????????????return?null

????????}

?????????

????}

}