LeetCode 平时闲暇之余做的 LeetCode 上的练习题 。 1-bit and 2-bit Characters Assign Cookies Best Time To Buy And Sell Stock Big Countries Binary Number with Alternating Bits Classes More Than 5 Students Climbing Stairs Count Binary Substrings Implement Magic Dictionary Implement Queue Using Stacks Implement Stack Using Queues Is Subsequence Length of Last Word License Key Formatting Linked List Cycle Longest Increasing Subsequence Map Sum Pairs Maximum Average Subarray I Maximum Depth of Binary Tree Maximum Product Of Word Lengths Maximum Subarray Minimum Depth of Binary Tree Move Zeroes Not Boring Movies Palindrome Number Remove Duplicates from Sorted Array Remove Element Search In Rotated Sorted Array Search Insert Position Shortest Distance to a Character Shortest Unsorted Continuous Subarray Sort Array By Parity Swap Salary Symmetric Tree Tenth Line Transpose File Two Sum Valid Palindrome II Valid Parentheses Valid Phone Numbers Word Frequency 注意： 不保证也几乎肯定不是各个问题的最优解 。