档案日期2015的28

2015年7月13日 - 2015年7月19日

[LeetCode]Word Break

题目描述:

Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words.

For example, given
s = "leetcode",
dict = ["leet", "code"].

Return true because "leetcode" can ...

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[LeetCode]Lowest Common Ancestor of a Binary Tree

题目描述:

Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree.

According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes v and w as the ...

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