James Seaward

2025

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

Created by: Doug Hull

Tags projecteuler

2

Solutions

14

Size

2

Solutions

14

Size

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

Created by: Cody Team

Tags projecteuler, fibonacci

2

Solutions

59

Size

2

Solutions

59

Size

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

Created by: Doug Hull

Tags projecteuler

1

Solution

30

Size

1

Solution

30

Size

Problem 42705. Is It a Snake?

Created by: Ned Gulley

Tags matrix manipulation, badger badger badger badger

4

Solutions

100

Size

4

Solutions

100

Size

Problem 42699. Find the Area of a Polygon

Created by: Shishir Patel

Tags geometry

1

Solution

17

Size

1

Solution

17

Size

Problem 42855. Height of a right-angled triangle

Created by: Jasmina Lazic

Tags geometry, poor_test_suite, pythagora

5

Solutions

37

Size

5

Solutions

37

Size

Problem 164. Right and wrong

Created by: the cyclist

Tags triangle

1

Solution

30

Size

1

Solution

30

Size

Problem 2202. Flip the bit

Created by: the cyclist

Tags binary, bit manipulation

3

Solutions

16

Size

3

Solutions

16

Size

Problem 2412. Is My Wife Wrong?

Created by: Lee

Tags binary

1

Solution

9

Size

1

Solution

9

Size

Problem 42317. De-primed

Created by: goc3

Tags prime

1

Solution

28

Size

1

Solution

28

Size

Problem 42318. Evened up (or not)

Created by: goc3

Tags even, odd

1

Solution

27

Size

1

Solution

27

Size

Problem 2270. Bit calculation

Created by: Debopam

Tags binary, count, number

1

Solution

22

Size

1

Solution

22

Size

Problem 2342. Numbers spiral diagonals (Part 2)

Created by: Jean-Marie Sainthillier

Tags primes, project euler, spiral

1

Solution

41

Size

1

Solution

41

Size

Problem 2455. Diagonal of a Spiral Matrix

Created by: rifat

Tags spiral, diag

2

Solutions

82

Size

2

Solutions

82

Size

Problem 2336. Calendar Matrix

Created by: Ned Gulley

Tags date, calendar

2

Solutions

88

Size

2

Solutions

88

Size

Problem 2695. Toeplitz Matrix

Created by: VIVEK RUHELA

Tags toeplitz

2

Solutions

48

Size

2

Solutions

48

Size

Problem 2365. Generate this matrix

Created by: rifat

Tags matrix, diag

1

Solution

91

Size

1

Solution

91

Size

Problem 2340. Numbers spiral diagonals (Part 1)

Created by: Jean-Marie Sainthillier

Tags primes, project euler, spiral

2

Solutions

27

Size

2

Solutions

27

Size

Problem 1636. ZigZag matrix with reflected format

Created by: Suman Saha

Tags matrix

2

Solutions

35

Size

2

Solutions

35

Size

Problem 2177. Rainbow matrix

Created by: Simon

Tags matrix

3

Solutions

33

Size

3

Solutions

33

Size

Problem 8073. Matrix Construction I

Created by: Abdullah Caliskan

Tags matrix, basic matlab

1

Solution

40

Size

1

Solution

40

Size

Problem 2064. Generate this matrix

Created by: Sabarinathan Vadivelu

Tags computation

1

Solution

38

Size

1

Solution

38

Size

Problem 44341. Hexagonal numbers on a spiral matrix

Created by: Mehmet OZC

Tags big integer, cody5, hexagonal numbers

7

Solutions

57

Size

7

Solutions

57

Size

Problem 44344. The 5th Root

Created by: goc3

Tags root, power, cody5

4

Solutions

16

Size

4

Solutions

16

Size

"Cody" * 5 == "CodyCodyCodyCodyCody"

Created by: Peng Liu

Tags multiplication, string, cody5

6

Solutions

51

Size

6

Solutions

51

Size

Problem 43752. Vandermonde Matrix

Created by: JD

Tags twofunctions

1

Solution

45

Size

1

Solution

45

Size

Problem 43492. Create a square matrix with given conditions

Created by: Andriy Kavetsky

Tags matrix

1

Solution

48

Size

1

Solution

48

Size

Problem 43651. create a square matrix

Created by: JAEHYUK WOO

Tags matrix

2

Solutions

36

Size

2

Solutions

36

Size

Problem 1719. Dice face matrix!

Created by: Chris E.

Tags matrix manipulation, dice, fun

2

Solutions

83

Size

2

Solutions

83

Size

Problem 42992. S-T-R-E-T-C-H I-T O-U-T

Created by: James

Tags interpolation, stretch

1

Solution

75

Size

1

Solution

75

Size

Problem 1096. Largest Twin Primes

Created by: Des Mc Manus

Tags primes

1

Solution

36

Size

1

Solution

36

Size

Problem 1012. Determine if input is a perfect number

Created by: Binbin Qi

Tags mod sum, perfect

1

Solution

23

Size

1

Solution

23

Size

Problem 1008. Determine if input is a Narcissistic number

Created by: Binbin Qi

Tags mod floor

1

Solution

23

Size

1

Solution

23

Size

Problem 170. First N Perfect Squares

Created by: @bmtran (Bryant Tran)

Tags math, perfect squares, integers

1

Solution

14

Size

1

Solution

14

Size

Problem 44340. Recaman Sequence - III

Created by: Mehmet OZC

Tags cody5, recaman sequence

3

Solutions

94

Size

3

Solutions

94

Size

Problem 42695. Replace secondary diagonal elements of a square array

Created by: Ahmad

Tags square matrix, secondary diagonal

2

Solutions

21

Size

2

Solutions

21

Size

Problem 44310. Digit concentration in Champernowne's constant

Created by: Mehmet OZC

Tags cody5, champernowne's constant, big number

3

Solutions

55

Size

3

Solutions

55

Size

Problem 44381. Cache me Outside

Created by: @bmtran (Bryant Tran)

Tags cody5, memoize

1

Solution

12

Size

1

Solution

12

Size

Problem 44343. Pair Primes

Created by: Mehmet OZC

Tags integers, prime numbers, cody5

4

Solutions

40

Size

4

Solutions

40

Size

Problem 44311. Number of Even Elements in Fibonacci Sequence

Created by: Mehmet OZC

Tags fibonacci, cody5, big number

3

Solutions

12

Size

3

Solutions

12

Size

Problem 42845. generate number in particular way

Created by: Pramit Biswas

Tags basic, matlab

2

Solutions

47

Size

2

Solutions

47

Size

Problem 58. Tic Tac Toe FTW

Created by: Cody Team

Tags game, fun, tic tac toe

4

Solutions

94

Size

4

Solutions

94

Size

Problem 80. Test for balanced parentheses

Created by: Cody Team

Tags regexp, parens

6

Solutions

65

Size

6

Solutions

65

Size

Problem 68. Kaprekar Steps

Created by: Cody Team

Tags matlab, lookup table, poor_problem_statement

2

Solutions

89

Size

2

Solutions

89

Size

Problem 56. Scrabble Scores

Created by: Cody Team

Tags strings, scrabble

2

Solutions

40

Size

2

Solutions

40

Size

Problem 66. Find the two-word state names

Created by: Cody Team

Tags regexp, states

1

Solution

22

Size

1

Solution

22

Size

Problem 71. Read a column of numbers and interpolate missing data

Created by: Cody Team

Tags data cleaning, average

3

Solutions

129

Size

3

Solutions

129

Size

Problem 78. Implement a ROT13 cipher

Created by: Cody Team

Tags matlab, encoding, cipher

3

Solutions

62

Size

3

Solutions

62

Size

Problem 70. Alphabetize by last name

Created by: Cody Team

Tags regexp, sorting

2

Solutions

35

Size

2

Solutions

35

Size

Problem 93. Calculate the Levenshtein distance between two strings

Created by: Cody Team

Tags matlab, string metric

2

Solutions

122

Size

2

Solutions

122

Size

1 – 50 of 136