1528. Shuffle String

Description

You are 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:

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.

 

Constraints:

  • s.length == indices.length == n
  • 1 <= n <= 100
  • s consists of only lowercase English letters.
  • 0 <= indices[i] < n
  • All values of indices are unique.

Solutions

Solution 1

Python Code
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class Solution:
    def restoreString(self, s: str, indices: List[int]) -> str:
        ans = [0] * len(s)
        for i, c in enumerate(s):
            ans[indices[i]] = c
        return ''.join(ans)

Java Code
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class Solution {
    public String restoreString(String s, int[] indices) {
        int n = s.length();
        char[] ans = new char[n];
        for (int i = 0; i < n; ++i) {
            ans[indices[i]] = s.charAt(i);
        }
        return String.valueOf(ans);
    }
}

C++ Code
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class Solution {
public:
    string restoreString(string s, vector<int>& indices) {
        int n = s.size();
        string ans(n, 0);
        for (int i = 0; i < n; ++i) {
            ans[indices[i]] = s[i];
        }
        return ans;
    }
};

Go Code
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func restoreString(s string, indices []int) string {
	ans := make([]rune, len(s))
	for i, c := range s {
		ans[indices[i]] = c
	}
	return string(ans)
}

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