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Date	Number	Title	Link
6/27	704	classic binary search	704
6/28	240	search 2D matrix	240
6/29	394	decode string	394
6/30	200	number of islands	200
6/30	785	is graph Bipartite	785
6/30	739	daily temperature	739
7/01	994	orange rotting	994
7/01	286	walls and gates	286
7/03	3	longest substring	3
7/04	438	find anagrams	438
7/04	485	find max consecutive ones	485
7/05	1004	find max consecutive ones 3	1004
7/05	231	is power of 2	231
7/05	191	number of ones	191
7/05	405	conver to hex	405
7/06	190	reverse bits	190
7/06	490	maze 1 has path	490
7/08	102	level traversal	102
7/08	108	sorted array to balanced BST	108
7/09	236	lowest common ancestor	236
7/09	76	minimum window substring	76
7/09	50	my pow	50
7/09	408	valid word abbreviation	408
7/10	OOD	parking lot	parking lot 1
7/11	OOD	parking lot	parking lot 2
7/13	509	Fibonacci	509
7/13	55	jump game 1	55
7/14	45	jump game 2	455
7/14	53	max subarray sum	53
7/15	133	clone graph	133
7/15	215	Kth Largest Element in an Array	215
7/16	75	Sort Colors	75
7/16	72	Edit Distance	72
7/17	LinkedIn	Polish LinkedIn	LinkedIn
7/18	221	Maximal Square	221
7/20	13	strStr	13
7/20	56	two sum	56
7/20	64	merge two Sorted Array	64
7/20	100	remove Duplicates from sorted array	100
7/20	141	integer sqrt	141
7/21	117	Populating Next Right Pointers in Each Node II	117
7/24	172	remove element	172
7/25	1819	longest Semi-Alternating Substring	1819
7/26	80	remove Duplicates at most 2	80
7/26	26	remove Duplicates	26
7/26	27	remove Duplicates given target	26
7/26	1089	duplicate Zeros	1089
7/28	46	permute	46
7/28	47	permute with duplicate	47
7/28	102	level Order	102
7/28	103	zigzag Level Order	103
7/28	173	BST Iterator	173
7/28	236	lowest Common Ancestor	236
7/29	900	closest Value in BST	900
7/29	474	lowest Common Ancestor II(parent)	474
7/29	138	copy Random linked List	138
7/29	133	copy graph	133
7/30	450	delete Node in BST	450
7/30	578	LCA 3(may not in tree)	578
7/30	589	N-ary Tree Preorder Traversal	589
7/30	429	N-ary Tree level order Traversal	429
7/30	39	Combination Sum	39
7/31	594	str str(rabin karp)	594
7/31	129	sum Numbers from root to leaf	129
8/01	17	Letter Combinations of a Phone Number	17
8/02	90	sub set 2(dup)	90
8/02	85	insert node in BST	85
8/02	1008	build bst From Preorder	1008
8/03	174	Remove Nth Node From End of List	174
8/03	437	top K Frequent	437
8/06	207	can Finish classes	207
8/06	878	Boundary of Binary Tree	878
8/06	391	Number of Airplanes in the Sky	391
8/06	920	meeting rooms	920
8/06	919	meeting rooms 2	919
8/07	8	Rotate String	8