SOURCE

function isStraight(arr) {
  let max = 0,min=14,kingNum=0
  let amap = {
    A: 1,
    J: 11,
    Q: 12,
    K: 13,
    小王: -1,
    大王: -1
  }
  for (let i = 0; i < arr.length; i++) {
    arr[i] = amap[arr[i]] ? amap[arr[i]] : arr[i]
    if (arr[i] === -1) {kingNum++;continue}
    if(arr[i]<min) min = arr[i]
    if(arr[i]>max) max = arr[i]
  }
  let set = new Set(arr)
  // 检查是否重复
  if(set.size<arr.length) return false
  // 根据最大值与最小值的间隔数判断是否顺子
  if(max-min>4) return false
  return true
}

console.log(isStraight([1, 2, 4, 5,'小王']))

function getRadomArr(){
  let dataSource = ['A',1,2,3,4,5,6,7,8,9,10,'J','Q','K','小王','大王']
  let rs = []
  for (let i = 0; i < 5; i++) {
    let index = Math.floor(Math.random() * 16)
    rs.push(dataSource[index])
  }
  return rs
}

function test() {
  let testArr = getRadomArr()
  console.log('测试数据：',testArr.join(','))
  console.log('测试结果：',isStraight(testArr))
}