Sort
 Usage
• Sort[list] 以规范顺序对 list 中元素排序.
• Sort[list, p] 使用排序函数p对 list 中元素排序.
Notes
• Mathematica 所使用的规范顺序的详细描述参见 A.3.9节. • Sort[list, p] 把函数 p 应用到 list 中的元素对上以确定它们是否是按顺序排列的. 缺省的函数 p 为 OrderedQ[{#1, #2}]&. • Sort 可被使用到带任意头(不单是 List)的表达式上.
 Further Examples
You can put a list of letters into canonical order.
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Both of these commands sort the list from largest to smallest.
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This puts elements that do not depend on x before those that do.
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Here are two numbers.
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In the canonical order x comes before y.
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However, x is greater than y in magnitude.
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Ordering numeric expressions according to magnitude by default would usually be too slow. This is why the following differ.
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