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Mark-Simulacrum/index.html

Created January 17, 2015 19:13
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Calculates numbers that add up to a given sum with a given number of digits. // source http://jsbin.com/himemutimo
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta name="description" content="Calculates numbers that add up to a given sum with a given number of digits." />
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
Sum: <input type="number" id="sum" /><br>
Digits: <input type="number" id="digits" /><br>
<button id="submit">Calculate</button>
<section id="output"></section>
<script id="jsbin-javascript">
var output = document.querySelector('#output');
function append() {
var args = _.toArray(arguments);
var para = document.createElement('P');
para.innerHTML = args.join(" ");
output.appendChild(para);
}
function calculate(sum, digitAmount) {
console.log(sum, digitAmount);
var sumOfTwo = sum;
var numberOfDigits = digitAmount;
var numberArr = _.range(0, sumOfTwo/2); // Going half-way is enough since other number is sumOfTwo - current
function isValidNumber(number) {
var digitArr = number.toString().split("");
var digitArrTwo = (sumOfTwo - number).toString().split("");
if (digitArr.length === numberOfDigits && digitArrTwo.length === numberOfDigits) {
if (_.uniq(digitArr).length === numberOfDigits && _.uniq(digitArrTwo).length === numberOfDigits) {
if (_.uniq(digitArr.concat(digitArrTwo)).length === numberOfDigits) {
return true;
}
}
}
return false;
}
var filteredNumbers = numberArr.filter(isValidNumber);
if (filteredNumbers.length > 0) {
var topArr = [filteredNumbers.length, "pair(s) of #s that add up to", sumOfTwo, "and are", numberOfDigits, "digits long:<br>"];
var numArr = [];
filteredNumbers.forEach(function (firstNum) {
numArr.push([firstNum, "+", sumOfTwo - firstNum].join(" "));
});
topArr.push(numArr.join(",<br> "));
append.apply(null, topArr);
}
}
//_.range(1, 5000).forEach(function (num) { calculate(num, 3); });
document.getElementById("submit").addEventListener("click", function () {
output.innerHTML = "";
var start = Date.now();
calculate(
parseInt(document.getElementById("sum").value, 10),
parseInt(document.getElementById("digits").value, 10)
);
output.innerHTML += (Date.now() - start)/1000 + " seconds";
});
document.getElementById("sum").value = 1000000;
document.getElementById("digits").value = 6;
document.getElementById("submit").click();
</script>
<script id="jsbin-source-html" type="text/html"><!DOCTYPE html>
<html>
<head>
<meta name="description" content="Calculates numbers that add up to a given sum with a given number of digits." />
<script src="http://d3js.org/d3.v3.min.js"><\/script>
<script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"><\/script>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
Sum: <input type="number" id="sum" /><br>
Digits: <input type="number" id="digits" /><br>
<button id="submit">Calculate</button>
<section id="output"></section>
</body>
</html></script>
<script id="jsbin-source-javascript" type="text/javascript">var output = document.querySelector('#output');
function append() {
var args = _.toArray(arguments);
var para = document.createElement('P');
para.innerHTML = args.join(" ");
output.appendChild(para);
}
function calculate(sum, digitAmount) {
console.log(sum, digitAmount);
var sumOfTwo = sum;
var numberOfDigits = digitAmount;
var numberArr = _.range(0, sumOfTwo/2); // Going half-way is enough since other number is sumOfTwo - current
function isValidNumber(number) {
var digitArr = number.toString().split("");
var digitArrTwo = (sumOfTwo - number).toString().split("");
if (digitArr.length === numberOfDigits && digitArrTwo.length === numberOfDigits) {
if (_.uniq(digitArr).length === numberOfDigits && _.uniq(digitArrTwo).length === numberOfDigits) {
if (_.uniq(digitArr.concat(digitArrTwo)).length === numberOfDigits) {
return true;
}
}
}
return false;
}
var filteredNumbers = numberArr.filter(isValidNumber);
if (filteredNumbers.length > 0) {
var topArr = [filteredNumbers.length, "pair(s) of #s that add up to", sumOfTwo, "and are", numberOfDigits, "digits long:<br>"];
var numArr = [];
filteredNumbers.forEach(function (firstNum) {
numArr.push([firstNum, "+", sumOfTwo - firstNum].join(" "));
});
topArr.push(numArr.join(",<br> "));
append.apply(null, topArr);
}
}
//_.range(1, 5000).forEach(function (num) { calculate(num, 3); });
document.getElementById("submit").addEventListener("click", function () {
output.innerHTML = "";
var start = Date.now();
calculate(
parseInt(document.getElementById("sum").value, 10),
parseInt(document.getElementById("digits").value, 10)
);
output.innerHTML += (Date.now() - start)/1000 + " seconds";
});
document.getElementById("sum").value = 1000000;
document.getElementById("digits").value = 6;
document.getElementById("submit").click();</script></body>
</html>
Raw
jsbin.himemutimo.js
var output = document.querySelector('#output');
function append() {
var args = _.toArray(arguments);
var para = document.createElement('P');
para.innerHTML = args.join(" ");
output.appendChild(para);
}
function calculate(sum, digitAmount) {
console.log(sum, digitAmount);
var sumOfTwo = sum;
var numberOfDigits = digitAmount;
var numberArr = _.range(0, sumOfTwo/2); // Going half-way is enough since other number is sumOfTwo - current
function isValidNumber(number) {
var digitArr = number.toString().split("");
var digitArrTwo = (sumOfTwo - number).toString().split("");
if (digitArr.length === numberOfDigits && digitArrTwo.length === numberOfDigits) {
if (_.uniq(digitArr).length === numberOfDigits && _.uniq(digitArrTwo).length === numberOfDigits) {
if (_.uniq(digitArr.concat(digitArrTwo)).length === numberOfDigits) {
return true;
}
}
}
return false;
}
var filteredNumbers = numberArr.filter(isValidNumber);
if (filteredNumbers.length > 0) {
var topArr = [filteredNumbers.length, "pair(s) of #s that add up to", sumOfTwo, "and are", numberOfDigits, "digits long:<br>"];
var numArr = [];
filteredNumbers.forEach(function (firstNum) {
numArr.push([firstNum, "+", sumOfTwo - firstNum].join(" "));
});
topArr.push(numArr.join(",<br> "));
append.apply(null, topArr);
}
}
//_.range(1, 5000).forEach(function (num) { calculate(num, 3); });
document.getElementById("submit").addEventListener("click", function () {
output.innerHTML = "";
var start = Date.now();
calculate(
parseInt(document.getElementById("sum").value, 10),
parseInt(document.getElementById("digits").value, 10)
);
output.innerHTML += (Date.now() - start)/1000 + " seconds";
});
document.getElementById("sum").value = 1000000;
document.getElementById("digits").value = 6;
document.getElementById("submit").click();
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