릿코드 661. Image Smoother 코틀린

배열크기와 똑같은 배열만들고,자기자신+주변1칸의 평균을 해당위치값으로 설정,범위벗어나면 분모분자 둘다 안더하는식으로


정답

class Solution {
    fun imageSmoother(img: Array<IntArray>): Array<IntArray> {
        val smoothImgList = MutableList(img.size){ MutableList(img[0].size){0} }

        for (i in smoothImgList.indices){
            for (j in smoothImgList[0].indices){
                smoothImgList[i][j]=smoothValueCal(img,i,j)

            }
        }
        println(smoothImgList)
        return smoothImgList.map { it.toIntArray() }.toTypedArray()
    }
    fun smoothValueCal(img:Array<IntArray>,x:Int,y:Int):Int{
        var tempCount=0
        var tempValue=0
        val imgXSize=img.size
        val imgYSize=img[0].size
        for (i in 0..2){
            for (j in 0 ..2){
                if ((x+i-1)>=0 && (x+i-1)<imgXSize &&(y+j-1)>=0 && (y+j-1)<imgYSize){
                    tempCount+=1
                    tempValue+=img[x+i-1][y+j-1]
                }
            }
        }
        return Math.floor(tempValue.toDouble()/tempCount.toDouble()).toInt()
    }
}