31 lines
689 B
Python
31 lines
689 B
Python
# These codes are copied from modelscope revision c58451baead80d83281f063d12fb377fad415257
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# Copyright (c) Alibaba, Inc. and its affiliates.
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from collections import defaultdict
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class TreeNode:
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def __init__(self):
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self.child = defaultdict(TreeNode)
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class Trie:
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def __init__(self, eos):
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self.root = TreeNode()
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self.eos = eos
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def insert(self, word):
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cur = self.root
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for c in word:
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cur = cur.child[c]
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def get_next_layer(self, word):
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cur = self.root
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for c in word:
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cur = cur.child.get(c)
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if cur is None:
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return [self.eos]
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return list(cur.child.keys())
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