[코딜리티] - Lesson 5. CountDiv

안녕하세요 남갯입니다.

public int solution(int A, int B, int K) {
    // write your code in Java SE 8

    if (K == 1 || (A == B && B == K)){
        return B - A + 1;
    }

    int result = 0;
    int mock = (A > K) ? (A / K) : 0;
    int namugi = A % K;


    if (namugi > 0 && B < K) {
        mock += 1;
    }
    result = (B >= K) ? ((B - (K * mock)) / K) : 0;

    if (namugi == 0) {
        result++;
    }
    return result;
}

https://app.codility.com/demo/results/training35DBFU-83N/