-
Notifications
You must be signed in to change notification settings - Fork 0
/
D3_1244_최대상금_DFS.java
47 lines (39 loc) · 1.27 KB
/
D3_1244_최대상금_DFS.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
package com.swea.D3;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class D3_1244_최대상금_DFS {
static int N, result;
static char[] chars;
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int T = Integer.parseInt(br.readLine());
for (int t = 1; t <= T; ++t) {
result = 0;
String[] s = br.readLine().split(" ");
chars = s[0].toCharArray();
N = Integer.parseInt(s[1]);
dfs(0, 0);
System.out.println("#" + t + " " + result);
}
}
private static void dfs(int index, int count) {
if (count == N) {
result = Math.max(result, Integer.parseInt(String.valueOf(chars)));
return;
}
for (int i = index; i < chars.length; ++i) {
for (int j = i + 1; j < chars.length; ++j) {
if (chars[j] >= chars[i]) {
swap(i, j);
dfs(i, count + 1);
swap(i, j);
}
}
}
}
private static void swap(int a, int b) {
char temp = chars[a];
chars[a] = chars[b];
chars[b] = temp;
}
}