Codility – FrogJmp 문제풀이 (난이도 : 하)

// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

class Solution {
    public int solution(int X, int Y, int D) {
        // write your code in Java SE 8
        int distance = Y - X;
        return distance%D == 0 ? distance/D : distance/D + 1;
    }
}