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Sieve of Eratosthenes
Raw
config.ru
app = proc do |env|
Rack::Directory.new('.').call(env)
end
run app
Raw
e.coffee
angular.module( 'e', [ 'ngAnimate' ] ).controller 'eCtrl', [ '$scope', '$timeout', ($scope, $timeout) ->
$scope.stepInt = 50
markC = (n) -> $scope.numbers[n].composite = true
isCorP = (i) -> $scope.numbers[i].composite or $scope.numbers[i].prime
$scope.markThePs = ( n=2 ) ->
if ($scope.p * n) <= $scope.bounds
markC( $scope.p * n )
$timeout ( () -> $scope.markThePs(n+1) ), $scope.stepInt
else
keepGoing = false
for i in [$scope.p+1...$scope.bounds]
if not isCorP( i )
keepGoing = true
$timeout ( () ->
$scope.primes.push i
$scope.numbers[i].prime = true
$scope.p = i
$timeout $scope.markThePs, $scope.stepInt
), $scope.stepInt
break
$scope.done = true unless keepGoing
$scope.setupNumbersAndPrimes = ->
$scope.primes = []
$scope.numbers[0].prime = true
$scope.numbers[1].prime = true
$scope.numbers[2].prime = true
$scope.SieveOfE = () ->
$scope.setupNumbersAndPrimes()
$scope.p = 2
$scope.markThePs()
$scope.SieveOfEwoT = ->
$scope.setupNumbersAndPrimes()
$scope.p = 2
$scope.n = 2
while $scope.p < $scope.bounds
$scope.markThePsWoT()
$scope.markThePsWoT = () ->
if $scope.p*$scope.n < $scope.bounds
markC( $scope.p * $scope.n )
$scope.n = $scope.n+1
else
for i in [$scope.p+1...$scope.bounds]
unless isCorP( i )
$scope.primes.push i
$scope.numbers[i].prime = true
$scope.p = i
$scope.n = 2
break
$scope.generateNumbers = (bounds) ->
$scope.bounds = bounds
$scope.numbers = []
if bounds > 2
for i in [0..bounds]
$scope.numbers.push { prime: false, number: i }
]
Raw
e.css
.number {
display: inline-block;
border: 1px solid black;
padding: 1px;
margin: 1px;
width: 62px;
text-align: center;
}
.composite {
background-color: #8df;
}
.tiny {
font-size: 0.6em;
}
.holder {
display: inline-block;
}
.prime {
background-color: #dfa;
}
@-webkit-keyframes explode {
10% {
-webkit-transform: scale(1,1);
}
30% {
-webkit-transform: scale(3,3);
}
100% {
-webkit-transform: scale(1,1);
}
}
.prime-add {
-webkit-animation: explode 3s;
}
Raw
e.html
<html>
<head>
<link href="e.css" rel="stylesheet" />
</head>
<body ng-app="e">
<div class='algorithm' ng-controller='eCtrl' ng-init='generateNumbers(100)'>
<div class='item'>
Algorithm Complexity: O(n log log n)
</div>
<div class='item'>
Pseudo polynomial
</div>
<div class='item'>
Step duration:
<input ng-model='stepInt' placeholder='Enter step interval'>
</div>
<div class='item'>
<button ng-click='SieveOfE()'>Calculate using Sieve of Eratosthenes</button>
</div>
<div class='item' ng-show='p'>
<h3 ng-show='p'>P: {{ p }}</h3>
</div>
<div id='placeholder' ng-show='p' style='width: 700px;'>
<span class='number' ng-if='0 != $index' ng-repeat='n in numbers'>
<div class='holder' ng-class='{ "composite" : n.composite, "prime" : n.prime }'>
{{n.number}}
<div class='tiny'>{{n.prime&&'prime'||n.composite&&'composite'||'&nbsp;'}}</div>
</div>
</span>
</div>
<div class='item' ng-show='done'>Primes {{ primes }}</div>
</div>
<script src='https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.4/angular.js'></script>
<script src='https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.4/angular-animate.js'></script>
<script src='e.js'></script>
</body>
</html>
Raw
e.spec.coffee
ctrl = undefined
scope = undefined
timeout = undefined
beforeEach ->
module( "e" )
beforeEach inject ($controller, $rootScope, $timeout ) ->
scope = $rootScope.$new()
timeout = (fn, time) ->
fn()
ctrl = $controller( 'eCtrl', { $scope: scope, $timeout: timeout } )
describe "#SieveOfE", ->
it "calculates the first primes using the timeout function", ->
NUMBER_COUNT = 100
scope.generateNumbers( NUMBER_COUNT )
scope.SieveOfE()
expect( scope.numbers[5].prime ).toBeTruthy()
expect( scope.numbers[8].prime ).toBeFalsy()
expect( scope.primes[0] ).toEqual( 3 )
expect( scope.primes[1] ).toEqual( 5 )
expect( scope.primes[scope.primes.length-1] ).toEqual( 97 )
it "calculates the first primes using the timeout-free function", ->
NUMBER_COUNT = 100
scope.generateNumbers( NUMBER_COUNT )
scope.SieveOfEwoT()
expect( scope.numbers[5].prime ).toBeTruthy()
expect( scope.numbers[8].prime ).toBeFalsy()
expect( scope.primes[0] ).toEqual( 3 )
expect( scope.primes[1] ).toEqual( 5 )
expect( scope.primes[scope.primes.length-1] ).toEqual( 97 )
Raw
karma.js
// Karma configuration
// Generated on Mon Mar 31 2014 12:51:29 GMT-0700 (PDT)
module.exports = function(config) {
config.set({
// base path, that will be used to resolve files and exclude
basePath: '',
// frameworks to use
frameworks: ['jasmine'],
// list of files / patterns to load in the browser
files: [
"https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.4/angular.js",
"https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.4/angular-animate.js",
"https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.4/angular-mocks.js",
"e.coffee",
"e.spec.coffee"
],
// test results reporter to use
// possible values: 'dots', 'progress', 'junit', 'growl', 'coverage'
reporters: ['progress'],
// web server port
port: 9876,
// enable / disable colors in the output (reporters and logs)
colors: true,
// level of logging
// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
logLevel: config.LOG_INFO,
// enable / disable watching file and executing tests whenever any file changes
autoWatch: true,
browsers: ['Chrome'],
// If browser does not capture in given timeout [ms], kill it
captureTimeout: 60000,
singleRun: false
});
};
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