일곱난쟁이

function solution(arr){
let answer = arr
let sum = arr.reduce((a,b) => a+b, 0)
for(let i=0;i<8;i++){
for(let j = i+1; j<9; j++){
if ((sum - (arr[i] + arr[j])===100)){
arr.splice(j,1)
arr.splice(i,1)
}
}
}
return answer
}
let arr=[20,7,23,19,10,15,25,8,13]
console.log(solution(arr))