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素数

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woodchuck_lh

#1 Created at ... [Delete] [Delete and Lock User]
return arr.filter(function (x) {
  var flag=true;
  if(x===1)  flag=false;
  if(x===2)  flag=true;
  if(x===3)  flag=true;
  for (var i=2;i<=(x/2);i++){
    if (x%i===0) {
       flag=false;
       break;
    }
  }
  return flag===true;
});

Jemair丶

#2 Created at ... [Delete] [Delete and Lock User]

想到这个好厉害 手动给你点个赞


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