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| import java.util.*;
class Solution {
static ArrayList<Integer> arr = new ArrayList<Integer>();
static int cnt = 0;
static boolean[] check;
public static void dfs(int[] answer, int n, long k){
if(arr.size() == n){
cnt++;
if(cnt == k){
for(int i = 0 ; i < arr.size(); i++){
answer[i]= arr.get(i);
}
}
}
else{
for(int i = 1; i <=n; i++){
if(check[i] == false){
check[i] = true;
arr.add(i);
dfs(answer, n,k);
arr.remove(arr.size() - 1);
check[i] = false;
}
}
}
}
public int[] solution(int n, long k) {
int[] answer = new int[n];
ArrayList<Integer> arr = new ArrayList<Integer>();
check = new boolean[20];
dfs(answer , n , k);
return answer;
}
}
|