constLRUCache=function(capacity){this.cap=capacitythis.cache=newMap()}LRUCache.prototype.get=function(key){if(this.cache.has(key)){lettemp=this.cache.get(key)this.cache.delete(key)this.cache.set(key,temp)returntemp}else{return-1}}LRUCache.prototype.put=function(key,value){if(this.cache.has(key)){this.cache.delete(key)}elseif(this.cache.size===this.cap){this.cache.delete(this.cache.keys().next().value)}this.cache.set(key,value)}