Math

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#	Title	Acceptance	Difficulty
672	Bulb Switcher II Math	46.3%	Medium
670	Maximum Swap Array Math	38.1%	Medium
660	Remove 9 Math	46.2%	Hard
651	4 Keys Keyboard Math Dynamic Programming Greedy	47.3%	Medium
645	Set Mismatch Hash Table Math	40.4%	Easy
640	Solve the Equation Math	38.8%	Medium
634	Find the Derangement of An Array Math	33.3%	Medium
633	Sum of Square Numbers Math	32.1%	Easy
628	Maximum Product of Three Numbers Array Math	45.3%	Easy
625	Minimum Factorization Math Recursion	30.4%	Medium
598	Range Addition II Math	48.3%	Easy
593	Valid Square Math	39.8%	Medium
592	Fraction Addition and Subtraction Math	46.5%	Medium
573	Squirrel Simulation Math	51.8%	Medium
553	Optimal Division Math String	55.2%	Medium
537	Complex Number Multiplication Math String	63.9%	Medium
535	Encode and Decode TinyURL Hash Table Math	74.2%	Medium
523	Continuous Subarray Sum Math Dynamic Programming	22.9%	Medium
517	Super Washing Machines Math Dynamic Programming	36.8%	Hard
507	Perfect Number Math	33.7%	Easy
483	Smallest Good Base Math Binary Search	33.3%	Hard
469	Convex Polygon Math	32.7%	Medium
462	Minimum Moves to Equal Array Elements II Math	51.6%	Medium
453	Minimum Moves to Equal Array Elements Math	47.5%	Easy
441	Arranging Coins Math Binary Search	36.3%	Easy
423	Reconstruct Original Digits from English Math	44.3%	Medium
415	Add Strings Math	41.6%	Easy
413	Arithmetic Slices Math Dynamic Programming	54.7%	Medium
400	Nth Digit Math	30.1%	Easy
397	Integer Replacement Math Bit Manipulation	30.2%	Medium
396	Rotate Function Math	33.1%	Medium
372	Super Pow Math	34.5%	Medium
368	Largest Divisible Subset Math Dynamic Programming	33.7%	Medium
367	Valid Perfect Square Math Binary Search	38.3%	Easy
365	Water and Jug Problem Math	27.6%	Medium
360	Sort Transformed Array Math Two Pointers	44.2%	Medium
357	Count Numbers with Unique Digits Math Dynamic Programming Backtracking	46.1%	Medium
356	Line Reflection Hash Table Math	30.1%	Medium
343	Integer Break Math Dynamic Programming	46.1%	Medium
335	Self Crossing Math	25.5%	Hard
326	Power of Three Math	40.3%	Easy
319	Bulb Switcher Math Brainteaser	42.6%	Medium
313	Super Ugly Number Math Heap	37.8%	Medium
296	Best Meeting Point Math Sort	51.9%	Hard
279	Perfect Squares Math Dynamic Programming Breadth-first Search	37.1%	Medium
273	Integer to English Words Math String	22.2%	Hard
268	Missing Number Array Math Bit Manipulation	44.3%	Easy
264	Ugly Number II Math Dynamic Programming Heap	32.7%	Medium
263	Ugly Number Math	39.3%	Easy
258	Add Digits Math	51.3%	Easy
248	Strobogrammatic Number III Math Recursion	32.1%	Hard
247	Strobogrammatic Number II Math Recursion	40.1%	Medium
246	Strobogrammatic Number Hash Table Math	40.0%	Easy
233	Number of Digit One Math	28.5%	Hard
231	Power of Two Math Bit Manipulation	40.2%	Easy
224	Basic Calculator Math Stack	27.4%	Hard
223	Rectangle Area Math	33.1%	Medium
204	Count Primes Hash Table Math	26.6%	Easy
202	Happy Number Hash Table Math	40.8%	Easy
172	Factorial Trailing Zeroes Math	36.2%	Easy
171	Excel Sheet Column Number Math	47.4%	Easy
168	Excel Sheet Column Title Math	26.3%	Easy
166	Fraction to Recurring Decimal Hash Table Math	17.6%	Medium
149	Max Points on a Line Hash Table Math	15.3%	Hard
69	Sqrt(x) Math Binary Search	27.9%	Easy
67	Add Binary Math String	32.7%	Easy
66	Plus One Array Math	38.8%	Easy
65	Valid Number Math String	12.8%	Hard
60	Permutation Sequence Math Backtracking	28.7%	Medium
50	Pow(x, n) Math Binary Search	26.2%	Medium
43	Multiply Strings Math String	27.3%	Medium
29	Divide Two Integers Math Binary Search	15.9%	Medium
13	Roman to Integer Math String	46.1%	Easy
12	Integer to Roman Math String	45.1%	Medium
9	Palindrome Number Math	35.4%	Easy
8	String to Integer (atoi) Math String	14.0%	Medium
7	Reverse Integer Math	24.4%	Easy
2	Add Two Numbers Linked List Math	27.9%	Medium