java和javascript哪个简单

export default class LruCache {

private values = new Map();

private maxEntries: number;

constructor(maxEntries = 100) {

this.maxEntries = maxEntries;

}

public get(key: string): T {

const hasKey = this.values.has(key);

let entry: T;

if (hasKey) {

entry = this.values.get(key);

this.values.delete(key);

this.values.set(key, entry);

}

return entry;

}

public put(key: string, value: T) {

if (this.values.size >= this.maxEntries) {

const keyToDelete = this.values.keys().next().value;

this.values.delete(keyToDelete);

}

this.values.set(key, value);

}

}