HashMapCustom
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960
class HashTable{
constructor(size){
this.data=new Array(size);
}
_hash(key) {
let hash = 0;
for(let i = 0; i < key.length; i++){
hash = (hash + key.charCodeAt(i)* i) % this.data.length;
this.data.length;
}
return hash;
}
set(key, value) {
let address = this._hash(key);
if(!this.data[address]){
this.data[address] = [];
}
this.data[address].push([key,value]);
return this.data;
}
get(key){
const address = this._hash(key);
const currentBucket = this.data[address];
console.log(currentBucket);
if(currentBucket){
for(let i =0; i<currentBucket.length; i++){
if(currentBucket[i][0] === key){
return currentBucket[i][1];
}
}
}
return undefined;
}
keys(){
const keysArray = [];
for(let i=0; i<this.data.length; i++){
if(this.data[i]){
keysArray.push(this.data[i][0][0]);
}
}
return keysArray;
}
}
const myHashTable = new HashTable(50);
myHashTable.set('pears',10000);
myHashTable.set('apple',54);
myHashTable.set('grapes',50);
myHashTable.keys();
JavaScript
INFO