[Easy] Shuffle String

Description

Given a string s and an integer array indices of the same length.

The string s will be shuffled such that the character at the ith position moves to indices[i] in the shuffled string.

Return the shuffled string.

Example 1:

example1

Input: s = "codeleet", indices = [4,5,6,7,0,2,1,3]
Output: "leetcode"
Explanation: As shown, "codeleet" becomes "leetcode" after shuffling.

Example 2:

Input: s = "abc", indices = [0,1,2]
Output: "abc"
Explanation: After shuffling, each character remains in its position.

Example 3:

Input: s = "aiohn", indices = [3,1,4,2,0]
Output: "nihao"

Example 4:

Input: s = "aaiougrt", indices = [4,0,2,6,7,3,1,5]
Output: "arigatou"

Example 5:

Input: s = "art", indices = [1,0,2]
Output: "rat"

Constraints:

  • s.length == indices.length == n
  • 1 <= n <= 100
  • s contains only lower-case English letters.
  • 0 <= indices[i] < n
  • All values of indices are unique (i.e. indices is a permutation of the integers from 0 to n - 1).

Submission

Runtime: 72 ms, faster than 98.82% of JavaScript online submissions for Largest Number.

Memory Usage: 38.3 MB, less than 67.93% of JavaScript online submissions for Largest Number.

/**
 * @param {string} s
 * @param {number[]} indices
 * @return {string}
 */
const restoreString = function(s, indices) {
  let len = s.length
  let result = []
  for (let i = 0; i < len; i++) {
    result[indices[i]] = s[i]
  }
  return result.join('')
}

풀이

  • result 변수 : s를 새롭게 정렬할 배열
  • 문자열 s 길이만큼 반복문
  • result[indices[0 ~ s.length -1]]s[indices[0 ~ s.length -1] 값 넣어줌
  • 배열을 문자열로 합쳐서 반환

Written by@thumbsu
프론트엔드 개발자 엄지수 입니다.

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