16 lines
474 B
TypeScript
16 lines
474 B
TypeScript
export function pushToStack(stack: string[], id: string): void {
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if (stack.includes(id)) {
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// 如果已经存在于栈中，先移除再插入到栈顶
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stack.splice(stack.indexOf(id), 1);
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}
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stack.push(id);
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}
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export function popFromStack(stack: string[]): string | undefined {
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return stack.pop();
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}
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export function topFromStack(stack: string[]): string | undefined {
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return stack.at(-1); // 使用 .at() 方法访问最后一个元素
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}
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