릿코드 2149. Rearrange Array Elements by Sign 코틀린

양수음수 따로 배열에 담아두고,양수음수 번갈아가며 조립

정답

class Solution {
    fun rearrangeArray(nums: IntArray): IntArray {
        val plusList = mutableListOf<Int>()
        val minusList = mutableListOf<Int>()
        for (i in nums){
            if (i>=0){
                plusList.add(i)
            }else{
                minusList.add(i)
            }
        }
        val resList = mutableListOf<Int>()
        for (i in 0 until plusList.size){
            resList.add(plusList[i])
            resList.add(minusList[i])

        }

        return resList.toIntArray()
    }
}