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class Array2D:
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"""
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说明：
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1.构造方法需要两个参数，即二维数组的宽和高
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2.成员变量w和h是二维数组的宽和高
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3.使用：‘对象[x][y]’可以直接取到相应的值
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4.数组的默认值都是0
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"""
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def __init__(self, w, h, default=0):
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self.w = w
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self.h = h
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self.data = []
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self.data = [[default for y in range(h)] for x in range(w)]
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def debug_show(self):
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for y in range(self.h):
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for x in range(self.w):
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print(self.data[x][y], end=' ')
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print("")
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def __getitem__(self, item):
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return self.data[item]
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