codewarsチャレンジシリーズ(三):The Feast of Many Best and…

/**
                  
   
*/
//            
function feast(beast, dish) {
  return beast[0] === dish[0] && beast[beast.length-1] === dish[dish.length-1]
}

// slice  substr  startsWith            
function feast(beast, dish) {
  return beast.charAt(0)===dish.charAt(0)&&beast.substr(-1)===dish.substr(-1)
}
}

/**
      ，          ，      ，            ，     。           。

  ：        ，              。                ，    0，   n。   customers            arr，          。
*/
function queueTime(customers, n) {
  //TODO
  if(customers.length <= 0) return 0
  let arr = new Array(n);
  arr.fill(0);
  do {
    arr[arr.indexOf(Math.min.apply(null, arr))] += customers.shift()
  } while (customers.length > 0)
  return Math.max.apply(null, arr)
}

//     ， customers  ，           ；              
function queueTime(customers, n) {
  let arr = new Array(n).fill(0);
  for (let i of customers) {
    arr[arr.indexOf(Math.min(...arr))] += i;
  }
  return Math.max(...arr);
}

/**
    Car    ，  body  、chassis      ，    component  ，          。
    " "+"_".repeat(n)      ，   length-2；
    "|" + "[]".repeat(n) + " ".repeat(n) + "[]".repeat(n) + "\\"      ，   length-1；
    "-o".repeat(n) + "-".repeat(n) + "o-".repeat(n) + "'"      ，   length。
    _____________          ______          __________
   |[][]   [][][]\        |[][][]\        |        []\
   -o-o-o-----o-o-'       -o----o-'       -o-o------o-'
      length doors    ，           。     first、second、third     ，         
function Car(length, doors) {
 if(length<7 || doors === 0 || doors*2 > length-3){
    throw new Error()
  }
  let first = second = third = ""
  this.body = {
    component:  first + "
" + second + "
"
  }
  this.chassis = {
    component: third
  }
}
 // first,     ，  "_"   
first = ' '+'_'.repeat(length-3)

 // second,      "[]"        ，             ，            doors/2    
let secondDoors = ['[]'.repeat(doors/2|0),'[]'.repeat(Math.ceil(doors/2))];
second = "|" + secondDoors[0] + " ".repeat(length-3-doors*2) + secondDoors[1] + "\\";

 //third，           
    let axlesElse = length-12 > 0 ? Math.floor((length-12)/2)+1 : 0;
    for(let i = 0; i < axlesElse; i++){
      thirdAxles[(i%2)]+="o-"
    }
let third = thirdAxles[0] + '-'.repeat(length-1-2*axlesElse-3*2) + thirdAxles[1] + "'";
*/
//     
function Car(length, doors) {
  if(length<7 || doors === 0 || doors*2 > length-3){
    throw new Error()
  }
  let thirdAxles = ["-o-","-o-"];
    let axlesElse = length-12 > 0 ? Math.floor((length-12)/2)+1 : 0;
    for(let i = 0; i < axlesElse; i++){
      thirdAxles[(i%2)]+="o-"
    }
  let third = thirdAxles[0] + '-'.repeat(length-1-2*axlesElse-3*2) + thirdAxles[1] + "'";
  this.body = {
    component:  " " + "_".repeat(length-3) + "
|" + '[]'.repeat(doors/2|0) + " ".repeat(length-3-doors*2) + '[]'.repeat(Math.ceil(doors/2)) + "\\
"
  }
  this.chassis = {
    component: thirdAxles[0] + '-'.repeat(length-1-2*axlesElse-3*2) + thirdAxles[1] + "'"
  }
}