回答編集履歴
2
コード追記
test
CHANGED
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@@ -82,7 +82,11 @@
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82
82
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83
83
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def num_direction(num: int, direction: str) -> Optional[int]:
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84
84
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85
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-
if num < 0 or num >= grid_size ** 2: # 不正な
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85
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+
if num < 0 or num >= grid_size ** 2: # numが不正な値のとき
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86
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+
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87
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return None
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88
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+
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89
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elif direction not in direction_converter: # directionが不正な値のとき
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86
90
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87
91
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return None
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88
92
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@@ -112,6 +116,8 @@
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112
116
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113
117
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print(num_direction(16, "下")) # None
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114
118
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119
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print(num_direction(16, "斜め")) # None
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120
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+
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115
121
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116
122
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117
123
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1
コード追記
test
CHANGED
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@@ -5,6 +5,10 @@
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5
5
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```Python
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6
6
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7
7
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"""
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8
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+
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9
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https://teratail.com/questions/247619
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10
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11
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+
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8
12
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9
13
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周囲が-1で囲まれた番兵付きの拡大版gridを用意する。
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10
14
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@@ -78,6 +82,10 @@
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78
82
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79
83
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def num_direction(num: int, direction: str) -> Optional[int]:
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80
84
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85
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+
if num < 0 or num >= grid_size ** 2: # 不正な引数
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86
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87
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return None
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88
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+
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81
89
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next_index = grid.index(num) + direction_converter[direction]
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82
90
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83
91
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if (next_num := grid[next_index]) != -1:
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@@ -92,11 +100,17 @@
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92
100
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93
101
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def main():
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94
102
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103
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# 入力例
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104
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95
105
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print(num_direction(0, "右")) # 1
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96
106
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97
107
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print(num_direction(2, "右上")) # None
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98
108
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99
109
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print(num_direction(7, "上")) # 3
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110
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+
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111
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print(num_direction(-1, "下")) # None
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112
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113
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print(num_direction(16, "下")) # None
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100
114
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101
115
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102
116
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