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switch(A*2+B){
case 0:
break;
case 1:
break;
case 2:
break;
case 3:
break;
}
var a=[0,1,2,3,4,5,6],b=[0,1,2,3,4,5],kv={}
for(var i=0;i<a.length;i++)
for(var j=0;j<b.length;j++)kv['k'+a[i]+b[j]]=a[i]*b[j]
alert(kv['k02'])
var a = true;
var b = false;
switch (a+" "+b) {
case "true true": alert("tt"); break;
case "true false": alert("tf"); break;
case "false true": alert("ft"); break;
case "false false": alert("ff"); break;
}