Created
April 26, 2013 09:55
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1からNまでの整数を並べ替えるHTML版.
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<!DOCTYPE html> | |
<html lang="ja"> | |
<head> | |
<meta charset="UTF-8"> | |
<title>1からNまでの整数をランダムに並び替える</title> | |
</head> | |
<body> | |
<h1>1からNまでの整数をランダムに並び替える</h1> | |
<p>並び替えたい数の最大値を入力してください: <input type="text" name="max" id="max" value="0" /> <input type="button" value="決定" onclick="getMax();" /></p> | |
<p><input type="button" value="並び替える" onclick="randOrder();"/></p> | |
<p>並び替え前: <span id="before"></span></p> | |
<p>並び替え後: <span id="after"></span></p> | |
<script> | |
var before; | |
var after; | |
function getMax(){ | |
var max = document.getElementById('max').value; | |
before = new Array(max); | |
after = new Array(max); | |
for(var i=0;i<max;i++) { | |
before[i] = i+1; | |
} | |
document.getElementById('before').innerHTML = before; | |
} | |
function randOrder() { | |
var j = 0; | |
while(before.length > 0) { | |
var r = Math.floor(Math.random() * before.length); | |
after[j] = before[r]; | |
before.splice(r,1); | |
j++; | |
} | |
document.getElementById('after').innerHTML = after; | |
} | |
</script> | |
</body> | |
</html> |
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