常规现场面试机智应对小算法（总结个人面试大佬们临时写的小算法）

function Check(str){
    if(!str) return ‘‘
    return str === Array.from(str).reverse().join(‘‘)
}

function count(str) {
  let hash = {}, sub = 0
  while (1) {
    let c = str.charAt(sub)
    if (!c) break
    !hash[c] ? hash[c] = 1 : hash[c]++
    sub++
  }
  return hash
}

const a = [1,3,5,6,9,11]

Math.max(...a) // 11 

Math.min(...a) // 1

function randomStr(n) {
  let base = ‘abcdefghijklmnopqistuvwxyz9876543210‘, len = base.length, str = ‘‘;
  for (let i = 0; i < n; i++) {
    str += base.charAt(Math.floor(Math.random() * len))
  }
  return str;
}
randomStr(10) //1k82a33xmp