Greed is Good.js

/*
Description:
Greed is a dice game played with five six-sided dice. Your mission, should you choose to accept it, is to score a throw according to these rules. You will always be given an array with five six-sided dice values.

 Three 1's => 1000 points
 Three 6's =>  600 points
 Three 5's =>  500 points
 Three 4's =>  400 points
 Three 3's =>  300 points
 Three 2's =>  200 points
 One   1   =>  100 points
 One   5   =>   50 point
A single die can only be counted once in each roll. For example, a "5" can only count as part of a triplet (contributing to the 500 points) or as a single 50 points, but not both in the same roll.

Example scoring

 Throw       Score
 ---------   ------------------
 5 1 3 4 1   50 + 2 * 100 = 250
 1 1 1 3 1   1000 + 100 = 1100
 2 4 4 5 4   400 + 50 = 450
*/

function score( dice ) {
 let result=0;
 let arr2=[];
 
 const arr1=dice.sort((a,b)=>a-b)
 for (let i=1;i<7;i++)
 { 
 arr2.push(arr1.slice(arr1.indexOf(i),arr1.lastIndexOf(i)+1))
 }
 let arr=arr2.map(v=>v.length)
 for (let j=0;j<5;j++){
if(arr[0]>=3){ result+=1000;arr[0]-=3;}
if (arr[0]>0){result+=100;arr[0]-=1}
if(arr[1]>=3){ result+=200;arr[1]-=3}
if(arr[2]>=3){ result+=300;arr[2]-=3}
if(arr[3]>=3){ result+=400;arr[3]-=3}
if(arr[4]>=3){ result+=500;arr[4]-=3;}
if (arr[4]>0){result+=50;arr[4]-=1}
if(arr[5]>=3){ result+=600;arr[5]-=3}
 }
 return result
}