Andreas Neu

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1 – 50 of 212

Problem 43236. Find my daddy long leg (No 's')

Created by: Jamil Kasan

Tags basics, hypoteuse, triangles

3

Solutions

25

Size

3

Solutions

25

Size

Problem 769. Calculate the area of a triangle between three points

Created by: Reza Ahmadzadeh

Tags math, triangle

2

Solutions

109

Size

2

Solutions

109

Size

Problem 1383. Count letters occurence in text, specific to words with a given length.

Created by: Cedric

Tags regexp, letters, counts

1

Solution

115

Size

1

Solution

115

Size

Problem 185. Data decompression

Created by: Tomasz

Tags strings, prefix free codes, bit manipulation

1

Solution

84

Size

1

Solution

84

Size

Problem 462. letter yes yes & letter no no

Created by: AMITAVA BISWAS

Tags string, letter, alphabet

1

Solution

28

Size

1

Solution

28

Size

Problem 724. QWERTY Shift Code Decoder

Created by: Richard Zapor

Tags code, char, str2num

2

Solutions

16

Size

2

Solutions

16

Size

Problem 44815. Word Distance - Sum

Created by: goc3

Tags distance, string, letter

2

Solutions

90

Size

2

Solutions

90

Size

Problem 723. QWERTY Shift Encoder

Created by: Richard Zapor

Tags string, lexi, code

1

Solution

33

Size

1

Solution

33

Size

Problem 42394. It's going down. We're finding simbers!

Created by: James

Tags projecteuler, you better move, you better dance

4

Solutions

84

Size

4

Solutions

84

Size

Problem 44341. Hexagonal numbers on a spiral matrix

Created by: Mehmet OZC

Tags big integer, cody5, hexagonal numbers

2

Solutions

39

Size

2

Solutions

39

Size

Problem 42415. Divisible by 13

Created by: goc3

Tags string, precision, overflow

2

Solutions

94

Size

2

Solutions

94

Size

Problem 1253. Infinite precision division

Created by: Christopher

Tags infinite precision, doh!

1

Solution

139

Size

1

Solution

139

Size

Problem 553. How to multiply?

Created by: AMITAVA BISWAS

Tags arithmetic, convolution, multiply

1

Solution

168

Size

1

Solution

168

Size

Problem 564. How to subtract?

Created by: AMITAVA BISWAS

Tags addition, cody5, X-Y

1

Solution

204

Size

1

Solution

204

Size

Problem 563. How to add?

Created by: AMITAVA BISWAS

Tags string, arithmetic, add

1

Solution

133

Size

1

Solution

133

Size

Problem 546. Is A the inverse of B?

Created by: Bruce Raine

Tags inverse function, inverse, identity

4

Solutions

49

Size

4

Solutions

49

Size

Problem 42966. find "greatest common divisor" of two integer value

Created by: Mehdi

Tags gcd, integer number

1

Solution

31

Size

1

Solution

31

Size

Problem 44468. Diagonal Pattern

Created by: Shaul Salomon

Tags matrices, loops, 22105

1

Solution

60

Size

1

Solution

60

Size

Problem 42876. Rotate Matrix @180 degree

Created by: Pritesh Shah

Tags matrix manipulation, matrix

1

Solution

13

Size

1

Solution

13

Size

Problem 50912. Draw a '0' in a one matrix!

Created by: Szász Botond

Tags x

2

Solutions

44

Size

2

Solutions

44

Size

Problem 42581. Create sequnce 1 4 9 16 25.........

Created by: Azhar

Tags vectors, sequences, logical

1

Solution

17

Size

1

Solution

17

Size

Problem 2674. Generalised Hamming Number

Created by: Jean-Marie Sainthillier

Tags hamming

1

Solution

82

Size

1

Solution

82

Size

Problem 1826. Find vampire numbers

Created by: Andrew Newell

Tags factors, number theory

2

Solutions

217

Size

2

Solutions

217

Size

Problem 8057. (Linear) Recurrence Equations - Generalised Fibonacci-like sequences

Created by: Jan Orwat

Tags sequences, fibonacci, recurrence

1

Solution

124

Size

1

Solution

124

Size

Problem 752. Is X a Fibonacci Matrix?

Created by: Sean de Wolski

Tags fibonacci, Tic...Toc...

2

Solutions

165

Size

2

Solutions

165

Size

Problem 42340. Fibonacci Decomposition

Created by: Ned Gulley

Tags fibonacci

1

Solution

151

Size

1

Solution

151

Size

Problem 44481. How many Fibonacci numbers?

Created by: Bob Tivnan

Tags integers, fibonacci, #easy

1

Solution

136

Size

1

Solution

136

Size

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

Created by: elias GR

Tags primes, factors

1

Solution

33

Size

1

Solution

33

Size

Problem 148. Factorize THIS, buddy

Created by: the cyclist

Tags easy prime, basic matlab

1

Solution

16

Size

1

Solution

16

Size

Problem 43269. Get all prime factors

Created by: Jamil Kasan

Tags primes, factorization

1

Solution

14

Size

1

Solution

14

Size

Problem 191. Proper Factors

Created by: @bmtran (Bryant Tran)

Tags proper factors

3

Solutions

82

Size

3

Solutions

82

Size

Problem 1066. Multiples of a Number in a Given Range

Created by: @bmtran (Bryant Tran)

Tags factor, plus15, colon

1

Solution

25

Size

1

Solution

25

Size

Problem 1925. Smith numbers

Created by: Sky Sartorius

Tags sum, factors

2

Solutions

62

Size

2

Solutions

62

Size

Problem 44311. Number of Even Elements in Fibonacci Sequence

Created by: Mehmet OZC

Tags fibonacci, cody5, big number

1

Solution

14

Size

1

Solution

14

Size

Problem 1946. Fibonacci-Sum of Squares

Created by: Chris Cleveland

Tags fibonacci, sum of squares

2

Solutions

44

Size

2

Solutions

44

Size

Problem 44946. Solve a System of Linear Equations

Created by: Pooja Lalan

Tags matrix creation, vector creation, backslash

1

Solution

43

Size

1

Solution

43

Size

Problem 44951. Verify Law of Large Numbers

Created by: Pooja Lalan

Tags rand, random integers

4

Solutions

23

Size

4

Solutions

23

Size

Problem 42938. Project Euler: Problem 18, Maximum path sum I

Created by: Riam Su

Tags projecteuler, euler

1

Solution

71

Size

1

Solution

71

Size

Problem 42673. Longest Collatz Sequence

Created by: Jean-Marie Sainthillier

Tags project euler, collatz number

2

Solutions

148

Size

2

Solutions

148

Size

Problem 44732. Highly divisible triangular number (inspired by Project Euler 12)

Created by: goc3

Tags series, triangle, projecteuler

2

Solutions

58

Size

2

Solutions

58

Size

Problem 273. Recurring Cycle Length (Inspired by Project Euler Problem 26)

Created by: @bmtran (Bryant Tran)

Tags project euler, digits, decimals

1

Solution

85

Size

1

Solution

85

Size

Problem 252. Project Euler: Problem 16, Sums of Digits of Powers of Two

Created by: @bmtran (Bryant Tran)

Tags project euler, big integer, digits

3

Solutions

115

Size

3

Solutions

115

Size

Problem 44733. Large Sum (inspired by Project Euler 13)

Created by: goc3

Tags string, project euler, large number

5

Solutions

219

Size

5

Solutions

219

Size

Problem 2664. Divisors for big integer

Created by: Jean-Marie Sainthillier

Tags projecteuler, divisors

1

Solution

69

Size

1

Solution

69

Size

Problem 2342. Numbers spiral diagonals (Part 2)

Created by: Jean-Marie Sainthillier

Tags primes, project euler, spiral

2

Solutions

95

Size

2

Solutions

95

Size

Problem 2340. Numbers spiral diagonals (Part 1)

Created by: Jean-Marie Sainthillier

Tags primes, project euler, spiral

1

Solution

41

Size

1

Solution

41

Size

Problem 42936. Project Euler: Problem 11, Largest product in a grid

Created by: Riam Su

Tags projecteuler

20

Solutions

223

Size

20

Solutions

223

Size

Problem 2337. Sum of big primes without primes

Created by: Jean-Marie Sainthillier

Tags primes, project euler, eratosthenes

1

Solution

61

Size

1

Solution

61

Size

Problem 42935. Sums of cubes and squares of sums

Created by: John D'Errico

Tags integers, projecteuler, numbers

3

Solutions

31

Size

3

Solutions

31

Size

Problem 2523. longest common substring : Skipped character version

Created by: rifat

Tags substring matching

2

Solutions

117

Size

2

Solutions

117

Size

1 – 50 of 212