What's the big O for JavaScript's array access when used as a hash?  For example,  var x= []; for(var i=0; i<100000; i++){    x[i.toString()+'a'] = 123; // using string to illustrate x[alpha] } alert(x['9999a']); // linear...
I am trying to get the count of the most repeated letter in a word  function GreatestCount(str) {     var count = {}      for (var i = 0 ; i<str.length;i++)     {         var char = str[i];         count[char] = (count[char] || 0) + 1;      }...
In learning how to implement a robust hash table, I am wondering the algorithm v8 uses to create the hash from a key, and what they use as the key (for string keys). Most of the examples on hash table key generation are hello world examples and subje...
I need to store some statistics using JavaScript in a way like I'd do it in C#:    Dictionary<string, int> statistics;  statistics["Foo"] = 10; statistics["Goo"] = statistics["Goo"] + 1; statistics.Add("Zoo",...
I pretty don't understand why this test :  http://jsperf.com/push-method-vs-setting-via-key  Shows that    a.push(Math.random());   is over ten times slower than    a[i] = Math.random();   Could you explain why this is the case ? What magic "...
Are there any noticeable benefits of using Object over ES6's Map()? I like using it for the forEach function. Is it a bad practice to opt for Map() when needing hash tables?...
I am using a hash table in JavaScript, and I want to show the values of the following in a hash table  one   -[1,10,5] two   -[2] three -[3, 30, 300, etc.]   I have found the following code. It works for the following data.     one  -[1]    two  -[2]...
I want to create a hashtable of json objects, where each json object represents a user.  I want to do this to sort of create a client side 'cache' of users.  User { ID: 234, name: 'john', ..);   So I can then reference things like thi...
I'd like to use a variable that contains the key value for a hash table in Google Apps Script.  In place of:  var folderRoots = {   "EYFS English":"sdfg0987897sdfga3",   "EYFS Italian":"sdf8f9g7897sfdfg7",     }  v...
I'm trying to better understand how the space and time complexity of reading and writing values changes as the number of entries in an object grows....

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