Practice Problems

Problem of the Day: Integer Square Root — keep your streak alive!

Practice Problems

#ProblemTopicsDifficulty
381 Best of N implementation 900
386 Grouped with Dashes strings 900
388 Tidy the Spaces strings 900
394 The K-th Square Number math 900
421 Record Breakers implementation 900
424 How Many Blocks strings 900
429 The Longest Plateau implementation 900
430 Lowest Set Bit bitwise 900
431 Largest Power of Two Within math bitwise 900
438 The Repeating Banner math strings 900
446 Breaking Chocolate math 900
447 Black Squares math 900
450 The King's Options math 900
451 The Weird Algorithm math implementation 900
461 Tower of Hanoi: How Many Moves math 900
466 Inverse Permutation implementation 900
487 Transpose implementation 900
494 Least Common Multiple math 900
495 Strictly in the Middle implementation 900
499 Sum of the First K Powers of Two math 900
5 Count the Vowels strings 1000
10 Second Largest Value implementation 1000
12 Above the Average math implementation 1000
15 Longest Non-Decreasing Run implementation 1000
17 Most Frequent Value implementation 1000
18 The Missing Number math 1000
19 First Repeated Value implementation 1000
34 Closest to Zero implementation 1000
35 Segment Overlap math 1000
41 Clock Plus K Minutes implementation 1000
45 Returns to the Origin implementation 1000
46 Balanced Brackets implementation strings 1000
54 Run-Length Encoding strings 1000
55 Run-Length Decoding strings 1000
58 Rotate Left by K strings 1000
66 First Unique Character strings 1000
86 Most Frequent Word strings 1000
87 Word Chain strings 1000
111 K-th Smallest sorting 1000
112 Lower Median sorting 1000
113 Evens First, Order Kept implementation sorting 1000
123 Rotate Right by K implementation 1000
132 Symmetric Matrix implementation 1000
151 Smallest Divisor Above One math 1000
153 Reduce the Fraction math 1000
175 Armstrong Number math implementation 1000
184 Closest Two Values greedy sorting 1000
272 Same Multiset sorting 1000
273 Exactly One Side implementation 1000
284 Collatz Steps math implementation 1000