[Codility] FrogJmp

Lesson 3 - Time Complexity : FrogJmp

kotlin

ceil() 사용

import kotlin.math.*

fun solution(X: Int, Y: Int, D: Int): Int {
    return ceil((Y - X) / D.toDouble()).toInt()
}

ceil() 사용하지 않고 풀기

fun solution(X: Int, Y: Int, D: Int): Int {
    if (X == Y) return 0

    val quotient = (Y - X) / D 
    
    if (X + D * quotient < Y) return quotient + 1
    else return quotient

    return -1
}