random-hex-string - create a random hex value string

random-hex-string.js

// Dec 27, 2018
// create a random hex value string

var hex = function() {
  return Math.floor(Date.now() * Math.random()).toString(16);
}

// test it out

var values = Array(1000000).fill(0).map(function() {
  return hex();
});

// track any duplicate values

var dupes = values.reduce(function(dupes, value) { 
  value in dupes.visited || (dupes.visited[value] = 0);
  
  dupes.visited[value] += 1;
  
  if (dupes.visited[value] > 1) {
    dupes.values[value] = dupes.visited[value]
  }
  
  return dupes;
}, { values: {}, visited: {} });

console.log(Object.keys(dupes.values).length);

console.log(dupes.values);