LeetCode Practice

ID	Question				Dif     Freq    
26	Remove Duplicates from Sorted Array	1	3	array, two pointers
27	Remove Element				1	4	array, two pointers
58	Length of Last Word			1	1	string
66	Plus One				1	2	array, math
83	Remove Duplicates from Sorted List	1	3	linked list
100	Same Tree				1	1	tree, dfs
101	Symmetric Tree				1	2	tree, dfs
104	Maximum Depth of Binary Tree		1	1	tree, dfs
110	Balanced Binary Tree			1	2	tree, dfs
111	Minimum Depth of Binary Tree		1	1	tree, dfs
112	Path Sum				1	3	tree, dfs
126	Word Ladder II				1	1	
1	Two Sum					2	5	array, set, sort, two pointers
7	Reverse Integer				2	3	math