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Description:Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tree in whi... 阅读全文
posted @ 2015-06-19 11:57
Pickle
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摘要:
Description:Design a stack that supports push, pop, top, and retrieving the minimum element in constant time.push(x) -- Push element x onto stack.pop(... 阅读全文
posted @ 2015-06-19 00:04
Pickle
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