Christos Saragiotis

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1 – 50 of 124

Problem 227. Math with Roman Numerals

Created by: eric landiech

Tags encoding

3

Solutions

359

Size

3

Solutions

359

Size

Problem 42631. Cumulative minimum of an array

Created by: Matthew Eicholtz

Tags matrix manipulation, cummin

2

Solutions

147

Size

2

Solutions

147

Size

Problem 42633. Cumulative maximum of an array

Created by: Matthew Eicholtz

Tags matrix manipulation, cummax

7

Solutions

147

Size

7

Solutions

147

Size

Problem 196. love is an n-letter word

Created by: Alfonso Nieto-Castanon

Tags math, strings, search

1

Solution

119

Size

1

Solution

119

Size

Problem 56200. Triangle Coordinates

Created by: Ben Placek

Tags math, matrix creation

1

Solution

76

Size

1

Solution

76

Size

Problem 56185. Extract the Acrostic Message

Created by: Ben Placek

Tags string, cipher, text

2

Solutions

24

Size

2

Solutions

24

Size

Problem 55260. Create block matrix of integers (j+k-1) - Part II

Created by: Matt Tearle

Tags matrix, blocks

1

Solution

103

Size

1

Solution

103

Size

Problem 56283. Determine if Input is Oddish or Evenish (Odd/Even Sum of Digits)

Created by: Matt Tearle

Tags math, numbers

3

Solutions

21

Size

3

Solutions

21

Size

Problem 56190. Split Even Number Into Two Primes

Created by: Ben Placek

Tags math, primes

3

Solutions

47

Size

3

Solutions

47

Size

Problem 56195. Possible Rugby Scores

Created by: Matt Tearle

Tags math, rugby, linear combinations

1

Solution

63

Size

1

Solution

63

Size

Problem 55255. Create block matrix of integers (j+k-1) - Part I

Created by: Matt Tearle

Tags matrix, blocks

1

Solution

76

Size

1

Solution

76

Size

Problem 246. Project Euler: Problem 8, Find largest product in a large string of numbers

Created by: Doug Hull

Tags projecteuler

1

Solution

53

Size

1

Solution

53

Size

Problem 241. Project Euler: Problem 7, Nth prime

Created by: Doug Hull

Tags primes, projecteuler

2

Solutions

29

Size

2

Solutions

29

Size

Problem 249. Project Euler: Problem 9, Pythagorean numbers

Created by: Doug Hull

Tags projecteuler

2

Solutions

97

Size

2

Solutions

97

Size

Problem 250. Project Euler: Problem 10, Sum of Primes

Created by: Doug Hull

Tags projecteuler, basic matlab

1

Solution

12

Size

1

Solution

12

Size

Problem 240. Project Euler: Problem 6, Natural numbers, squares and sums.

Created by: Doug Hull

Tags projecteuler

2

Solutions

24

Size

2

Solutions

24

Size

Problem 239. Project Euler: Problem 5, Smallest multiple

Created by: Doug Hull

Tags projecteuler

1

Solution

27

Size

1

Solution

27

Size

Problem 235. Project Euler: Problem 4, Palindromic numbers

Created by: Doug Hull

Tags projecteuler

3

Solutions

54

Size

3

Solutions

54

Size

Problem 232. Project Euler: Problem 2, Sum of even Fibonacci

Created by: Cody Team

Tags projecteuler, fibonacci

4

Solutions

50

Size

4

Solutions

50

Size

Problem 230. Project Euler: Problem 1, Multiples of 3 and 5

Created by: Doug Hull

Tags projecteuler

3

Solutions

32

Size

3

Solutions

32

Size

Problem 365. Numbers with prime factors 2, 3 and 5.

Created by: elias GR

Tags primes, factors

6

Solutions

39

Size

6

Solutions

39

Size

Problem 1066. Multiples of a Number in a Given Range

Created by: @bmtran (Bryant Tran)

Tags factor, plus15, colon

1

Solution

23

Size

1

Solution

23

Size

Problem 148. Factorize THIS, buddy

Created by: the cyclist

Tags easy prime, basic matlab

2

Solutions

14

Size

2

Solutions

14

Size

Problem 43269. Get all prime factors

Created by: Jamil Kasan

Tags primes, factorization

1

Solution

12

Size

1

Solution

12

Size

Problem 234. Project Euler: Problem 3, Largest prime factor

Created by: Doug Hull

Tags projecteuler

2

Solutions

23

Size

2

Solutions

23

Size

Problem 191. Proper Factors

Created by: @bmtran (Bryant Tran)

Tags proper factors

3

Solutions

23

Size

3

Solutions

23

Size

Problem 83. Prime factor digits

Created by: Cody Team

Tags primes

3

Solutions

34

Size

3

Solutions

34

Size

Problem 56288. Angle Between Analog Clock Hands

Created by: Matt Tearle

Tags math, geometry

4

Solutions

51

Size

4

Solutions

51

Size

Problem 56175. Dartboard Average II

Created by: Matt Tearle

Tags math, mean, dartboard

6

Solutions

83

Size

6

Solutions

83

Size

Problem 56170. Dartboard Average I

Created by: Matt Tearle

Tags math, mean, dartboard

7

Solutions

46

Size

7

Solutions

46

Size

Problem 56180. Boustrophedon

Created by: Ben Placek

Tags matrix manipulation

5

Solutions

44

Size

5

Solutions

44

Size

Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

Tags numbers, number theory, sequence

2

Solutions

295

Size

2

Solutions

295

Size

Problem 45229. Bell Triangle

Created by: Asif Newaz

Tags number, matrix, Magic Numbers

3

Solutions

62

Size

3

Solutions

62

Size

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

5

Solutions

69

Size

5

Solutions

69

Size

Problem 45223. find nth even fibonacci number

Created by: Asif Newaz

Tags series, number, fibonacci

1

Solution

27

Size

1

Solution

27

Size

Problem 165. Woodall number

Created by: the cyclist

Tags woodall number theory

3

Solutions

41

Size

3

Solutions

41

Size

Problem 166. Kaprekar numbers

Created by: the cyclist

Tags kaprekar

2

Solutions

48

Size

2

Solutions

48

Size

Problem 156. Parasitic numbers

Created by: the cyclist

Tags parasitic

8

Solutions

21

Size

8

Solutions

21

Size

Problem 45253. Pell numbers

Created by: Asif Newaz

Tags number, sequence, pell

2

Solutions

40

Size

2

Solutions

40

Size

Problem 44509. Determine if input is a valid AHP evaluation matrix

Created by: Mehmet OZC

Tags logical, check

1

Solution

44

Size

1

Solution

44

Size

Problem 446. Solve the set of simultaneous linear equations

Created by: Bruce Raine

Tags simultaneous equations, linear

1

Solution

13

Size

1

Solution

13

Size

Problem 3073. Projector Matrix

Created by: goc3

Tags matrix, projector, idempotent

5

Solutions

21

Size

5

Solutions

21

Size

Problem 2130. Orthonormal matrix

Created by: Abdullah Caliskan

Tags matrix

1

Solution

30

Size

1

Solution

30

Size

Problem 451. Is this matrix orthogonal?

Created by: Bruce Raine

Tags orthogonal

1

Solution

24

Size

1

Solution

24

Size

Problem 389. Column norms of a matrix

Created by: Federico

Tags linear algebra, matrix, norm

2

Solutions

26

Size

2

Solutions

26

Size

Problem 42988. Linear system of equations

Created by: Abhishek Jain

Tags equations

1

Solution

16

Size

1

Solution

16

Size

Problem 42385. Combined Ages 4 - Non-symmetric with multiples, n ≥ 3

Created by: goc3

Tags matrix, sum, linear

3

Solutions

89

Size

3

Solutions

89

Size

Problem 42383. Combined Ages 3 - Non-symmetric, n ≥ 3

Created by: goc3

Tags matrix, sum, linear

2

Solutions

60

Size

2

Solutions

60

Size

Problem 42384. Combined Ages 2 - Symmetric, n ≥ 3

Created by: goc3

Tags matrix, sum, linear

2

Solutions

36

Size

2

Solutions

36

Size

Problem 615. Nilpotent matrix

Created by: Grzegorz Knor

Tags matrix

11

Solutions

22

Size

11

Solutions

22

Size

1 – 50 of 124