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export interface Queue<T> {
_data: T[]
push: (ele: T) => void
pushArray: (ele: T[]) => void
pop: () => T | undefined
isEmpty: () => boolean
peek: () => T | undefined
}
export function baseQueue<T>(): Queue<T> {
return {
_data: <T[]> [],
push: function (element: T): void {
this._data.push(element);
},
pushArray: function (arr: T[]) {
for (let ele of arr) {
this._data.push(ele);
}
},
pop: function (): T | undefined {
return this._data.shift();
},
peek: function (): T | undefined {
return this._data[0];
},
isEmpty: function (): boolean {
return this._data.length == 0;
},
}
}
export function queueFromArray<T>(arr: T[]): Queue<T> {
let base: Queue<T> = baseQueue();
base._data = arr;
return base;
}
export interface Stack<T> {
_data: T[]
pop: () => T | undefined
peek: () => T | undefined
push: (element: T) => void
size: () => number
isEmpty: () => boolean
clear: () => void
cloneData: () => T[]
}
export function baseStack<T>(): Stack<T> {
return {
_data: <T[]> [],
size: function (): number {
return this._data.length;
},
pop: function (): T | undefined {
return this._data.pop();
},
peek: function (): T | undefined {
return this._data[this.size() - 1];
},
push: function (ele: T): void {
this._data.push(ele);
},
isEmpty: function (): boolean {
return this.size() == 0;
},
clear: function (): void {
this._data = [];
},
cloneData: function (): T[] {
return [... this._data];
}
}
}
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