未做题目汇总

解码字符串LeetCode-394. Decode String (JAVA)解码字符串
LeetCode-282. Expression Add Operators (JAVA)表达式求值
LeetCode-313. Super Ugly Number (JAVA)超级丑数 
主元素问题


1.combination sum|,||,|||都是DFS深度优先搜索。
2.Summary Ranges 
Input: [0,1,2,4,5,7]
Output: ["0->2","4->5","7"]
3. 128. Longest Consecutive Sequence
Given [100, 4, 200, 1, 3, 2],
The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4.
4. Single Number|||