Practice Problems

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

Practice Problems — math

#ProblemTopicsDifficulty
1 Sum of Two Numbers math implementation 800
2 Even or Odd math 800
21 Sum of Digits math implementation 800
36 Which Quadrant math geometry 800
38 Sum 1 to N math 800
42 Leap Year math implementation 800
276 The Rook's Trip math 800
279 Same Color Squares math 800
287 Sum of the First N Odd Numbers math 800
288 Sum of the First N Even Numbers math 800
294 Handshakes All Around math 800
384 The Hidden Face math 800
400 The K-th Power Of Two Number math 800
22 Digital Root math 900
27 Ones in Binary math bitwise 900
28 Decimal to Binary math 900
29 Binary to Decimal math 900
33 Quotient and Remainder math 900
37 Can It Be a Triangle math geometry 900
155 Coprime or Not math 900
165 Polygon Diagonals math 900
170 Arithmetic or Not math 900
172 Perfect Square math 900
226 Power of Two math bitwise 900
275 The King's Walk math 900
289 Sum of Squares math 900
290 Sum of Cubes math 900
291 Pentagonal Numbers math 900
292 Hexagonal Numbers math 900
306 Harshad Number math 900
307 Pronic Number math 900
340 Multiples in a Range math 900
369 Enough Buses math 900
373 Fair Apples math 900
394 The K-th Square Number math 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
494 Least Common Multiple math 900
499 Sum of the First K Powers of Two math 900
12 Above the Average math implementation 1000
18 The Missing Number math 1000
35 Segment Overlap math 1000
151 Smallest Divisor Above One math 1000
153 Reduce the Fraction math 1000
175 Armstrong Number math implementation 1000