原文链接: https://leetcode-cn.com/problems/as-far-from-land-as-possible
英文原文Given an n x n grid containing only value
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原文链接: https://leetcode-cn.com/problems/flower-planting-with-no-adjacent
英文原文You have n gardens, labeled from 1 to n, a
原文链接: https://leetcode-cn.com/problems/brace-expansion-ii
中文题目如果你熟悉 Shell 编程，那么一定了解过花括号展开，它可以用来生成任意字符串。
花括号展开的表达式可以看作
原文链接: https://leetcode-cn.com/problems/lowest-common-ancestor-of-deepest-leaves
英文原文Given the root of a binary tree, r
原文链接: https://leetcode-cn.com/problems/shortest-path-with-alternating-colors
英文原文Consider a directed graph, with nodes
原文链接: https://leetcode-cn.com/problems/sum-of-nodes-with-even-valued-grandparent
英文原文Given the root of a binary tree,
原文链接: https://leetcode-cn.com/problems/deepest-leaves-sum
英文原文Given the root of a binary tree, return the sum of value
原文链接: https://leetcode-cn.com/problems/validate-binary-tree-nodes
英文原文You have n binary tree nodes numbered from 0 to
原文链接: https://leetcode-cn.com/problems/kth-ancestor-of-a-tree-node
英文原文You are given a tree with n nodes numbered from
原文链接: https://leetcode-cn.com/problems/smallest-string-with-swaps
英文原文You are given a string s, and an array of pairs
