Question

我有一些代码（已经提供并且需要为它添加代码以便它可以工作。下面的所有函数必须保留（它只是练习），最后一个函数（reduce函数）通过2个测试：

reduce([3, 5, 7], 0, adding); // works

reduce(["hey whats up", "this is a test"], 0, countingWords); // doesn not work

我认为必须更改countWords，因此reduce函数适用于两种情况

var adding = function(a, b) { //this function was provided
  return a + b;
};

function counting(string){ //this function must stay too
  var words;

  if (typeof string==='string') {
    words=string.split(" ");
  }
  else {
    words=string.join(" ").split(" ");
  }

  return words.length;
}

//counting("this is a sentence"); // should return 4 and it does -all good

function countingWords(words) { //must stay
  return counting(words);
}

function reduce(array,initial,func){
  var current=initial;
  for (var i=0; i<array.length; i++){
    current=func(current,array[i]);
  }
  return current;
}

reduce([3, 5, 7], 0, adding); // works

reduce(["hey whats up", "this is a test"], 0, counting); // doesn not work

非常感谢有关改变的帮助或建议!!

减少函数来计算单词并将它们一起添加到1个数字/不起作用

0 个答案: