601-700

('$' means the problem is locked on Leetcode, '*' means the problem is related to Database, '#' means the problem is related to Shell.)

#	Title	Solution	Difficulty
700	Search in a Binary Search Tree	62.70%	Easy
699	Falling Squares	36.80%	Hard
698	Partition to K Equal Sum Subsets	35.60%	Medium
697	Degree of an Array	47.90%	Easy
696	Count Binary Substrings	51.90%	Easy
695	Max Area of Island	53.30%	Easy
694	Number of Distinct Islands $	43.90%	Medium
693	Binary Number with Alternating Bits	54.20%	Easy
692	Top K Frequent Words	41.70%	Medium
691	Stickers to Spell Word	32.30%	Hard
690	Employee Importance	53.60%	Easy
689	Maximum Sum of 3 Non-Overlapping Subarrays	41.70%	Hard
688	Knight Probability in Chessboard	38.90%	Medium
687	Longest Univalue Path	32.90%	Easy
686	Repeated String Match	31.70%	Easy
685	Redundant Connection II	28.40%	Hard
684	Redundant Connection	37.40%	Medium
683	K Empty Slots	37.00%	Hard
682	Baseball Game	58.60%	Easy
681	Next Closest Time $	43.00%	Medium
680	Valid Palindrome II	31.10%	Easy
679	24 Game	38.30%	Hard
678	Valid Parenthesis String	28.30%	Medium
677	Map Sum Pairs	53.80%	Medium
676	Implement Magic Dictionary	50.70%	Medium
675	Cut Off Trees for Golf Event	27.20%	Hard
674	Longest Continuous Increasing Subsequence	43.20%	Easy
673	Number of Longest Increasing Subsequence	30.80%	Medium
672	Bulb Switcher II	47.60%	Medium
671	Second Minimum Node In a Binary Tree	42.30%	Easy
670	Maximum Swap	38.40%	Medium
669	Trim a Binary Search Tree	58.70%	Easy
668	Kth Smallest Number in Multiplication Table	36.30%	Hard
667	Beautiful Arrangement II	51.50%	Medium
666	Path Sum IV $	48.90%	Medium
665	Non-decreasing Array	21.20%	Easy
664	Strange Printer	31.10%	Hard
663	Equal Tree Partition $	36.70%	Medium
662	Maximum Width of Binary Tree	37.00%	Medium
661	Image Smoother	46.60%	Easy
660	Remove 9 $	46.10%	Hard
659	Split Array into Consecutive Subsequences	39.40%	Medium
658	Find K Closest Elements	36.30%	Medium
657	Judge Route Circle	69.30%	Easy
656	Coin Path $	24.60%	Hard
655	Print Binary Tree	50.80%	Medium
654	Maximum Binary Tree	70.80%	Medium
653	Two Sum IV - Input is a BST	50.60%	Easy
652	Find Duplicate Subtrees	33.20%	Medium
651	4 Keys Keyboard $	46.70%	Medium
650	2 Keys Keyboard	42.70%	Medium
649	Dota2 Senate	35.60%	Medium
648	Replace Words	48.40%	Medium
647	Palindromic Substrings	55.70%	Medium
646	Maximum Length of Pair Chain	47.40%	Medium
645	Set Mismatch	40.40%	Easy
644	Maximum Average Subarray II $	20.30%	Hard
643	Maximum Average Subarray I	38.40%	Easy
642	Design Search Autocomplete System $	29.40%	Hard
641	Design Circular Deque	48.00%	Medium
640	Solve the Equation	39.00%	Medium
639	Decode Ways II	22.80%	Hard
638	Shopping Offers	41.50%	Medium
637	Average of Levels in Binary Tree	55.60%	Easy
636	Exclusive Time of Functions	40.30%	Medium
635	Design Log Storage System $	47.70%	Medium
634	Find the Derangement of An Array $	32.70%	Medium
633	Sum of Square Numbers	31.60%	Easy
632	Smallest Range	42.80%	Hard
631	Design Excel Sum Formula $	25.60%	Hard
630	Course Schedule III	20.50%	Medium
629	K Inverse Pairs Array	23.90%	Hard
628	Maximum Product of Three Numbers	45.40%	Easy
627	Swap Salary	67.40%	Easy
626	Exchange Seats	49.60%	Medium
625	Minimum Factorization	29.50%	Medium
624	Maximum Distance in Arrays $	32.70%	Easy
623	Add One Row to Tree	48.70%	Medium
622	Design Circular Queue	36.60%	Medium
621	Task Scheduler	41.40%	Medium
620	Not Boring Movies	59.80%	Easy
619	Biggest Single Number $	36.60%	Easy
618	Students Report By Geography $	40.40%	Hard
617	Merge Two Binary Trees	69.60%	Easy
616	Add Bold Tag in String $	37.30%	Medium
615	Average Salary: Departments VS Company $	33.00%	Hard
614	Second Degree Follower $	22.70%	Medium
613	Shortest Distance in a Line $	70.60%	Easy
612	Shortest Distance in a Plane $	51.00%	Medium
611	Valid Triangle Number	38.90%	Medium
610	Triangle Judgement $	59.10%	Easy
609	Find Duplicate File in System	52.50%	Medium
608	Tree Node $	54.60%	Medium
607	Sales Person $	51.10%	Easy
606	Construct String from Binary Tree	51.80%	Easy
605	Can Place Flowers	30.00%	Easy
604	Design Compressed String Iterator $	31.60%	Easy
603	Consecutive Available Seats $	54.50%	Easy
602	Friend Requests II: Who Has the Most Friends $	42.50%	Medium
601	Human Traffic of Stadium	33.80%	Hard