数组全排列
程序代码：<html>
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Array.prototype.全排列=function(){
var r=[];
var that=this;
!function(n){
for(var i=n;i<that.length;i++){
[that[i],that[n]]=[that[n],that[i]];
if(n+1<that.length-1) arguments.callee(n+1);
else{
r.push(that.slice(0));
};
[that[i],that[n]]=[that[n],that[i]];
}
}(0);
return r;
};
document.body.innerHTML='刘备,张飞,赵云,关羽,黄忠'.split(',').全排列().join('<br>');
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