[CodeKata] K번째수

링크

• https://programmers.co.kr/learn/courses/30/lessons/42748?language=javascript

참고

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice

나의 풀이

function solution(array, commands) {
  let answer = [];
  for (let i = 0; i < commands.length; i++) {
    let index = commands[i][2];

    answer.push(
      array.slice(commands[i][0] - 1, commands[i][1]).sort((a, b) => a - b)[
        index - 1
      ]
    );
  }
  return answer;
}

map, filter, 비구조화할당을 활용한 풀이(이해하려는 중...)

function solution(array, commands) {
  return commands.map((command) => {
    const [sPosition, ePosition, position] = command;
    const newArray = array
      .filter(
        (value, fIndex) => fIndex >= sPosition - 1 && fIndex <= ePosition - 1
      )
      .sort((a, b) => a - b);

    return newArray[position - 1];
  });
}