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jikeytang/[ Javascript ] - 20140709-题目1

Created July 9, 2014 00:02
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[ Javascript ] - 20140709-题目1
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[ Javascript ] - 20140709-题目1
用速度最优的代码输出一个用"A"拼凑而成的平行四边形。
A
AAA
AAAAA
AAAAAAA
AAAAAAAAA
AAAAAAA
AAAAA
AAA
A
PS:
1. 回复时注意加上下面这句话，才会有语法高亮或格式缩进。
```javascript
// you code
```
2. 粘贴代码时请使用shift+tab，缩进前面的空白。
@heqing0712
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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>[ Javascript ] - 20140709-题目1</title>
    <style type="text/css">
        body{line-height:1.2em;text-align:center;}
    </style>
</head>

<body>
    <div id="cn"></div>
      <script type="text/javascript">
        (function (n,c) {
            var a = new Array(n+1).join(c), s = '', m = 0;
            while (n - 1) {
                s+= a.substr(0, ++m >n ? --n : m) + "<br/>";
            }
            document.getElementById('cn').innerHTML = s;

        }(8,'A'));
    </script>
</body>
</html>

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