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fe-interview-handwrite's Issues

添加注释

可以在代码中添加注释,比如题目背景,原理,一些过程中的注释

实现Promise.all有个错误

res.length === arr.length
这一句,并不能保证所有promise都resolve了
若res[1]=1,则res.length=2;
但res[0]对应的promise不一定resolve了。

最长递增子序列不对

仓库里的实现输出是 number 不是 number[],然后 arr 的状态转移也不太对。不知道是题不一样还是写成了别的。

自己实现了一下

function lis(nums: number[]): number[]{
  if (nums.length === 0) return [];
  const arr = new Array(nums.length).fill(1); // 保存以当前位置结尾的最大连续子串长度
  for (let i = 1; i < nums.length; i++) {
    if(nums[i]>nums[i-1]){
      arr[i] = Math.max(arr[i-1] + 1, 1)
    }
  }

  const lastIndex = arr.indexOf(Math.max(...arr))
  return nums.slice(lastIndex + 1 - arr[lastIndex],lastIndex + 1)
}

console.log(lis([1,2,3,2,3,4,5]))

bind的实现不完整

bind函数的返回值里可以传递参数。

我的实现是:

Function.prototype.bindNew = function (context, ...args) {
  return (...newArgs) => this.apply(context, [...args, ...newArgs]);
};

// test
const test = {
  name: "fy",
  showName: function (last: string) {
    console.log(this.name + " is " + last);
  },
};
test.showName("handsome"); // fy is handsome
test.showName.bind({ name: "Mr.fy" })("handsome");
test.showName.bindNew({ name: "Mr.fy" })("handsome");

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