原文链接: https://leetcode-cn.com/problems/letter-case-permutation
英文原文Given a string s, we can transform every letter ind
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原文链接: https://leetcode-cn.com/problems/split-array-with-same-average
英文原文You are given an integer array nums.
You sho
原文链接: https://leetcode-cn.com/problems/chalkboard-xor-game
英文原文You are given an array of integers nums represents the
原文链接: https://leetcode-cn.com/problems/shortest-path-visiting-all-nodes
英文原文You have an undirected, connected graph of
原文链接: https://leetcode-cn.com/problems/score-after-flipping-matrix
英文原文You are given an m x n binary matrix grid.
A m
原文链接: https://leetcode-cn.com/problems/shortest-path-to-get-all-keys
英文原文You are given an m x n grid grid where:
原文链接: https://leetcode-cn.com/problems/binary-gap
英文原文Given a positive integer n, find and return the longest distance
原文链接: https://leetcode-cn.com/problems/bitwise-ors-of-subarrays
英文原文We have an array arr of non-negative integers.
Fo
原文链接: https://leetcode-cn.com/problems/find-the-shortest-superstring
英文原文Given an array of strings words, return the s
原文链接: https://leetcode-cn.com/problems/prison-cells-after-n-days
英文原文There are 8 prison cells in a row and each cell i
