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var input = [],output=[];
var input1=[],output1=[];
function times(n, f) {
  var c=0;
  return function() {
    var args = [];
    for(var i=0,j=arguments.length; i<j; i++) {
      args.push(arguments[i]);
    }
    if(c<n) {
      c++;
      return f.apply(this, args);
    } else {
      return null;
    }
  };
}
var work = function(res) {
  return res.shift();
};
var f1 = times(10, work);
var r1 = function(res, f) {
  var ret = f(res);
  if(null !== ret) {
    output.push(ret);
    r1(res, f);
  }
};
var r2 = function(n) {
  for(var i=0; i<n; i++) {
    output1.push(work(input1));
  }
};
function test1() {
  input = [0,1,2,3,4,5,6,7,8,9];
  output = [];
  r1(input, f1);
}
function test2() {
  input1 = [0,1,2,3,4,5,6,7,8,9];
  output1 = [];
  r2(10);
}
var count = 100000;
var d1 = new Date().getTime();
for(var i=0; i<count; i++) {
  test1();
}
var d2 = (new Date().getTime()) - d1;
var d3 = new Date().getTime();
for(var i=0; i<count; i++) {
  test2();
}
var d4 = (new Date().getTime()) - d3;
alert(d2);
alert(d4);