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Copy pathscript.js
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91 lines (90 loc) · 2.04 KB
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class Stack {
constructor() {
this.arr = [];
}
push(value){
this.arr.push(value);
return this.arr;
}
pop() {
this.arr.pop();
}
peek(i = this.arr.length - 1) {
return this.arr[i];
}
reverse() {
return this.arr.reverse();
}
isEmpty() {
return this.arr.length === 0;
}
displayStack() {
return this.arr.join(" ");
}
get length() {
return this.arr.length;
}
}
console.group("Stack");
let myStack = new Stack();
myStack.push('One');
myStack.push('Two');
console.log(myStack.length); // 2
console.log(myStack.peek()); // "Two"
console.log(myStack.peek(0)); // "One"
console.log(myStack.reverse()); // ['Two', 'One']
console.log(myStack.displayStack()); // 'Two One'
myStack.pop();
console.log(myStack.length); // 1
console.log(myStack.peek()); // 'Two'
console.log(myStack.isEmpty()); // false
myStack.pop();
console.log(myStack.isEmpty()); // true
console.groupEnd();
class Queue {
constructor() {
this.arr = [];
}
enqueue(value){
this.arr.push(value);
return this.arr;
}
// dequeue() {
// this.arr.shift();
// }
dequeue() {
this.arr.splice(0,1);
}
peek(i = 0) {
return this.arr[i];
}
reverse() {
return this.arr.reverse();
}
isEmpty() {
return this.arr.length === 0;
}
displayQueue() {
return this.arr.join(" ");
}
get length() {
return this.arr.length;
}
}
console.group("Queue")
let atmQueue = new Queue();
atmQueue.enqueue('Aman');
atmQueue.enqueue('John');
atmQueue.enqueue('Rohan');
console.log(atmQueue.displayQueue()); // "Aman John Rohan"
console.log(atmQueue.length); // 3
console.log(atmQueue.peek()); // "Aman"
console.log(atmQueue.peek(1)); // "John"
atmQueue.dequeue();
console.log(atmQueue.length); // 2
console.log(atmQueue.peek()); // 'John'
console.log(atmQueue.isEmpty()); // false
atmQueue.dequeue();
atmQueue.dequeue();
console.log(atmQueue.isEmpty()); // true
console.groupEnd();