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change from ES5 to ES6

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This commit is contained in:
Rail
2020-10-27 02:59:07 +06:00
parent d272b1ee7a
commit 34a8b7065a
1 changed files with 13 additions and 13 deletions
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26
Data-Structures/Queue/Queue.js
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@ -7,7 +7,7 @@
// Functions: enqueue, dequeue, peek, view, length
var Queue = (function () {
const Queue = ( function () {
// constructor
function Queue () {
// This is the array representation of the queue
@ -17,7 +17,7 @@ var Queue = (function () {
// methods
// Add a value to the end of the queue
Queue.prototype.enqueue = function (item) {
this.queue[this.queue.length] = item
this.queue.push(item)
}
// Removes the value at the front of the queue
@ -26,7 +26,7 @@ var Queue = (function () {
throw new Error('Queue is Empty')
}
var result = this.queue[0]
let result = this.queue[0]
this.queue.splice(0, 1) // remove the item at position 0 from the array
return result
@ -51,7 +51,7 @@ var Queue = (function () {
}())
// Implementation
var myQueue = new Queue()
const myQueue = new Queue()
myQueue.enqueue(1)
myQueue.enqueue(5)
@ -62,19 +62,19 @@ myQueue.enqueue(54)
myQueue.view()
console.log('Length: ' + myQueue.length())
console.log('Front item: ' + myQueue.peek())
console.log('Removed ' + myQueue.dequeue() + ' from front.')
console.log('New front item: ' + myQueue.peek())
console.log('Removed ' + myQueue.dequeue() + ' from front.')
console.log('New front item: ' + myQueue.peek())
console.log(`Length: ${myQueue.length()}`)
console.log(`Front item: ${myQueue.peek()}`)
console.log(`Removed ${myQueue.dequeue()} from front.`)
console.log(`New front item: ${myQueue.peek()}`)
console.log(`Removed ${myQueue.dequeue()} from front.`)
console.log(`New front item: ${myQueue.peek()}`)
myQueue.enqueue(55)
console.log('Inserted 55')
console.log('New front item: ' + myQueue.peek())
console.log(`New front item: ${myQueue.peek()}`)
for (var i = 0; i < 5; i++) {
for (let i = 0; i < 5; i ++) {
myQueue.dequeue()
myQueue.view()
}
// console.log(myQueue.dequeue()); // throws exception!
// console.log(myQueue.dequeue()); // throws exception!