π Class
π μ μ μ κ³±κ·Ό νλ³
function solution(n){
	return Number.isInteger(Math.sqrt(n))
  ? (Math.sqrt(n)+1) ** 2 : -1
}
solution(121)
solution(3)
== μ¬μ©λ λ©μλ ==
3 ** 2
Math.pow(3, 2)	
Math.sqrt(4) 
Math.sqrt(3) 
Number.isInteger(4.1) 
π μ μΌ μμ μ μ κ±°νκΈ°
function solution (arr){
    const min = Math.min(...arr)
    
    const answer = arr.filter(num => {
      console.log(num)	// 4  3  2  1   // 10
      return num > min
    })
  
    return answer.length === 0 ? [-1] : answer
  }
  
  solution([4,3,2,1])	// [4,3,2]
  solution([10])			// [-1]
  
== μ¬μ©λ λ©μλ ==
arr = [1,2,3,0]
Math.min(...arr)