chapter 07: [Dictionaries and Hashes]

Author: loiane

examples/chapter07/01-Dictionaries.js

@@ -20,3 +20,9 @@ console.log(dictionary.values()); // ["gandalf@email.com", "tyrion@email.com"]
 
 console.log(dictionary.keyValues()); // [{key: "Gandalf", value: "gandalf@email.com"}, {key: "Tyrion", value: "tyrion@email.com"}]
 console.log(dictionary.toString()); // [#Gandalf: gandalf@email.com],[#Tyrion: tyrion@email.com]
+
+dictionary.forEach((k, v) => {
+  console.log('forEach: ', `key: ${k}, value: ${v}`);
+});
+// forEach:  key: Gandalf, value: gandalf@email.com
+// forEach:  key: Tyrion, value: tyrion@email.com

examples/chapter07/02-HashTable.js

@@ -2,23 +2,34 @@ const { HashTable } = PacktDataStructuresAlgorithms;
 
 const hash = new HashTable();
 
-hash.put('Gandalf', 'gandalf@email.com');
-hash.put('John', 'johnsnow@email.com');
-hash.put('Tyrion', 'tyrion@email.com');
-hash.put('Aaron', 'aaron@email.com');
-hash.put('Donnie', 'donnie@email.com');
-hash.put('Ana', 'ana@email.com');
+console.log(hash.hashCode('Ygritte') + ' - Ygritte');
+console.log(hash.hashCode('Jonathan') + ' - Jonathan');
+console.log(hash.hashCode('Jamie') + ' - Jamie');
+console.log(hash.hashCode('Jack') + ' - Jack');
+console.log(hash.hashCode('Jasmine') + ' - Jasmine');
+console.log(hash.hashCode('Jake') + ' - Jake');
+console.log(hash.hashCode('Nathan') + ' - Nathan');
+console.log(hash.hashCode('Athelstan') + ' - Athelstan');
+console.log(hash.hashCode('Sue') + ' - Sue');
+console.log(hash.hashCode('Aethelwulf') + ' - Aethelwulf');
+console.log(hash.hashCode('Sargeras') + ' - Sargeras');
+
+hash.put('Ygritte', 'ygritte@email.com');
 hash.put('Jonathan', 'jonathan@email.com');
 hash.put('Jamie', 'jamie@email.com');
-hash.put('Sue', 'sue@email.com');
-hash.put('Mindy', 'mindy@email.com');
-hash.put('Paul', 'paul@email.com');
+hash.put('Jack', 'jack@email.com');
+hash.put('Jasmine', 'jasmine@email.com');
+hash.put('Jake', 'jake@email.com');
 hash.put('Nathan', 'nathan@email.com');
+hash.put('Athelstan', 'athelstan@email.com');
+hash.put('Sue', 'sue@email.com');
+hash.put('Aethelwulf', 'aethelwulf@email.com');
+hash.put('Sargeras', 'sargeras@email.com');
 
 console.log('**** Printing Hash **** ');
 
 console.log(hash.toString());
-// {5 => [#Sue: sue@email.com]},{10 => [#Nathan: nathan@email.com]},{13 => [#Ana: ana@email.com]},{16 => [#Aaron: aaron@email.com]},{19 => [#Gandalf: gandalf@email.com]},{29 => [#John: johnsnow@email.com]},{32 => [#Paul: paul@email.com]}
+// {4 => [#Ygritte: ygritte@email.com]},{5 => [#Aethelwulf: aethelwulf@email.com]},{7 => [#Athelstan: athelstan@email.com]},{8 => [#Jasmine: jasmine@email.com]},{9 => [#Jake: jake@email.com]},{10 => [#Sargeras: sargeras@email.com]}
 
 console.log('**** Get **** ');
 

src/js/data-structures/hash-table.js

@@ -68,9 +68,7 @@ export default class HashTable {
     const keys = Object.keys(this.table);
     let objString = `{${keys[0]} => ${this.table[keys[0]].toString()}}`;
     for (let i = 1; i < keys.length; i++) {
-      objString = `${objString},{${keys[i]} => ${this.table[
-        keys[i]
-      ].toString()}}`;
+      objString = `${objString},{${keys[i]} => ${this.table[keys[i]].toString()}}`;
     }
     return objString;
   }