JavaScript基于数组实现的栈与队列操作示例

var colors = ["red","blue"];
colors.push("brown");   //从队列尾部添加一项
console.log(colors);//[ 'red', 'blue', 'brown' ]
var item =colors.pop();  //从队列尾部移出一项
console.log(colors);//[ 'red', 'blue' ]

var colors=["red","blue"];
colors.unshift("green");   //从队列的前端添加一项
console.log(colors);//[ 'green', 'red', 'blue' ]
colors.shift();   //从队列的前端移除一项
console.log(colors);//[ 'red', 'blue' ]

var colors=new Array();
var count=colors.push("red","green"); //从队列尾部推入两项
console.log(count);//2
var count=colors.push("black"); //从队列尾部推入另一项
console.log(colors);//[ 'red', 'green', 'black' ]
console.log(count);//3
var item=colors.shift();  //取得队列的第一项
console.log(item);//red
console.log(colors);//[ 'green', 'black' ]

var colors=new Array();  //创建一个数组
var count=colors.unshift("red","green");  //从队列首部添加两项
console.log(colors);//[ 'red', 'green' ]
count =colors.unshift("black"); //从队列首部添加另一项
console.log(colors);//[ 'black', 'red', 'green' ]
var item=colors.pop();    //从队列尾部移出一项
console.log(colors);//[ 'black', 'red' ]