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var a=[["1","3","10"],["3","1","10"],["9","2"],["1","10","3"]];
var ta=a.join(",").split(",").sort();//转换成为一维数组进行排序
var i = 0;
var b = [];
function number()
{
for(i=0; i<ta.length-1; i++)
{
if(ta[i] != ta[i+1])
{
b.push(ta[i+1])
}
};
b.splice(0,1);
b.splice(1,1);
document.write(b);
};
number();
var a=[["1","3","10"],["3","1","10"],["9","2"],["1","10","3"]];
var b = [];
for(var i in a) b.push(a[i].sort().join(','));
b.sort();
var c = [];
for(i=1; i<b.length; i++) {
if(b[i] != b[i-1]) c.push(b[i]);
}
for(i in c) c[i] = c[i].split(',');
alert(c);