ShuffleString.cpp

// Source : https://leetcode.com/problems/shuffle-string/submissions/
// Author : Hao Chen
// Date   : 2021-03-29

/***************************************************************************************************** 
 *
 * 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 i^th 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.
 * 
 * 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).
 ******************************************************************************************************/

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

};