쉬운 문제라도 문제를 푸는 방법은 다양합니다.
더 명확하고 깔끔한 문제 해결 방법을 아신다면 자유롭게 말씀해주세요.
프로그래머스 12941 최솟값 만들기
프로그래머스 저작권을 침해하지 않기 위해
문제 보시고 싶으시면 버튼을 눌러주세요.
답변 형식
배열 A, B 원소를 1번 씩만 사용하여 총 합 answer이 최소가 되는 곱셈 결과를 찾으면 된다.
풀이 조건
결과값이 최소가 되기 위해서 각각의 곱셈 값이 최소가 되어야 했다.
A의 최대와 B의 최소 / A의 최소와 B의 최대를 계산해야 했다.
JAVA 정답 해설
import java.util.Arrays;
class Solution
{
public int solution(int[] A, int[] B)
{
Arrays.sort(A);
Arrays.sort(B);
/// A, B 각각 sort하여 오름차순 정렬
int answer = 0;
int q = B.length–1;
for(int i=0; i<A.length; i++){
answer += A[i]*B[q–];
/// A배열을 작은 수부터 큰 수 순서로
/// B배열을 큰 수부터 작은 수 순서로
/// 곱해서 return 값에 더 함
}
return answer;
}
}
JAVA 정답
import java.util.Arrays;
class Solution
{
public int solution(int[] A, int[] B)
{
Arrays.sort(A);
Arrays.sort(B);
int answer = 0;
int q = B.length–1;
for(int i=0; i<A.length; i++){
answer += A[i]*B[q–];
}
return answer;
}
}
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