- Length of Last Word
simple C++ solution
- String Matching in an Array
realize simple C++ solution
- Reverse Vowels of a String
Create 1323. Maximum 69 Number.cpp
- Jewels and Stones.cpp
- Next Greater Element II
- Longest Substring Without Repeating Characters
- Add Strings 注意char int之间及时转换
- Roman to Integer
- Valid Palindrome
- First Unique Character in a String
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Implement strStr() 实际是字符sub string匹配问题，返回index。 注意 开头 特例情况
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Valid Parentheses Input: s = "()[]{}" Output: true
使用stack容器，左符号存入stack，右符号时，判断，stack中有左符号 相消， 否则 返回false（不对称，失败）
- Remove Duplicates from Sorted Array
- Move Zeroes
- Contains Duplicate.cpp mapping解决
- Middle of the Linked List 快慢指针