java 8

public static List<Integer> permutationEquation(List<Integer> p) {
    // Write your code here

    List<Integer> newList = new ArrayList<>();
    int x = 1;
    while (x <= p.size()) {
        for (int i = 0; i < p.size(); i++) {
            if (p.get(i) == x) {
                newList.add((p.indexOf(i + 1)) + 1);
            }
        }
        x++;

    }
    return newList;
}