Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | 1x 6x 6x 6x 6x 6x 8x 8x 6x 6x 1x 1x 6x 6x 8x 8x 6x 6x 3x 3x 6x | export class Stack<Element> {
private readonly elements: Element[] = [];
private readonly LAST_INDEX = -1;
public push(item: Element): number {
return this.elements.push(item);
}
public pop(): Element | undefined {
return this.elements.pop();
}
public size(): number {
return this.elements.length;
}
public peek(): Element | undefined {
return this.elements.at(this.LAST_INDEX);
}
}
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