<script>(s=String.prototype).r=s.replace;q:for(i in a=[3,3,8,8])for(j in a)for(k in a)for(l in a)if(i!=j&&i!=k&&i!=l&&j!=k&&j!=l&&k!=l)for(m in b=["(x+y)","(x-y)","(x*y)","(x/y)","(y-x)","(y/x)"])for(n in b)for(o in b)if((d=Math.abs)(eval(s=b[o].r(x="x",b[n].r(x,p=b[m].r(x,a[i]).r(y="y",a[j])).r(y,g=a[k])).r(y,h=a[l]))-24)<0.01||d(eval(s=b[n].r(x,p).r(y,b[o].r(x,g).r(y,h)))-24)<0.01){alert(s+"=24");break q;}alert("ok")</script>经典的24点算法
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