回答編集履歴
2
微修正
test
CHANGED
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@@ -66,13 +66,7 @@
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66
66
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67
67
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68
68
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69
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-
if(!flag) {
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70
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-
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71
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-
ans
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69
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+
return flag ? ans : new int[]{-1};
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72
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-
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73
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-
}
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74
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-
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75
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-
return ans;
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76
70
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77
71
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}
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78
72
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1
追記
test
CHANGED
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@@ -11,3 +11,101 @@
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11
11
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12
12
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13
13
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return ans.toArray()
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14
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+
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15
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+
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16
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+
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17
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+
[追記] バグみっけ。
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18
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+
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19
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+
```Java
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20
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+
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21
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+
import java.util.*;
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22
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+
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23
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+
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24
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+
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25
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+
public class Trial {
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26
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+
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27
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+
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28
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+
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29
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+
static int[] absolutePermutation(int n, int k) {
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30
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+
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31
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+
Set<Integer> used = new HashSet<Integer>();
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32
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+
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33
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+
boolean flag = true;
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34
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+
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35
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+
int[] ans = new int[n];
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36
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+
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37
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+
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38
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+
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39
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+
for(int i=1; i<=n; i++) {
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40
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+
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41
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+
if ( i-k >= 1 && !used.contains(i-k) ){
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42
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43
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used.add(i-k);
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44
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+
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45
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+
ans[i-1]= i-k; // ココと
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46
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+
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47
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+
continue;
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48
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+
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49
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+
}
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50
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+
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51
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+
if( i+k <= n && !used.contains(i+k) ){
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52
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+
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53
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+
used.add(i+k);
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54
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+
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55
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ans[i-1]= i+k; // ココ
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56
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+
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57
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+
continue;
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58
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+
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59
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+
}
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60
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+
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61
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+
flag = false;
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62
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+
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63
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+
break;
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64
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+
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65
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+
}
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66
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+
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67
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+
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68
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+
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69
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+
if(!flag) {
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70
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+
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71
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+
ans = new int[1]; ans[0] = -1;
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72
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+
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73
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+
}
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74
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+
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|
75
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+
return ans;
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76
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+
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77
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+
}
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78
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+
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79
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+
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80
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+
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81
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+
public static void main(String[] args) {
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82
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+
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83
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+
for ( int item : absolutePermutation(2, 1) ) {
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84
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+
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85
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+
System.out.printf("%d ", item);
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86
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+
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87
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+
}
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88
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+
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89
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+
System.out.println();
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90
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+
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91
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+
for ( int item : absolutePermutation(3, 0) ) {
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92
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+
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93
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+
System.out.printf("%d ", item);
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94
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+
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95
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+
}
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96
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+
|
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97
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+
System.out.println();
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98
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+
|
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99
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+
for ( int item : absolutePermutation(3, 2) ) {
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100
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+
|
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101
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+
System.out.printf("%d ", item);
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102
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+
|
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103
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+
}
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104
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+
|
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105
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+
System.out.println();
|
|
106
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+
|
|
107
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+
}
|
|
108
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+
|
|
109
|
+
}
|
|
110
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+
|
|
111
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+
```
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