Luu Hoai Nam

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1 – 50 of 267

Problem 597. The Birthday Phenomenon

Created by: Ben Ausdenmoore

Tags probability, stats

4

Solutions

49

Size

4

Solutions

49

Size

Problem 782. Some Assembly Required

Created by: James

Tags matrix manipulation, assembly

1

Solution

160

Size

1

Solution

160

Size

Problem 535. Rotate and display numbered tile

Created by: Ned Gulley

Tags strings, contest

1

Solution

151

Size

1

Solution

151

Size

Problem 556. Stuff the Board

Created by: Ned Gulley

Tags contest, poor_test_suite

3

Solutions

54

Size

3

Solutions

54

Size

Problem 1722. Find the next prime number

Created by: Chris E.

Tags prime

1

Solution

45

Size

1

Solution

45

Size

Problem 1567. Make a vector of prime numbers

Created by: Marek Kuklis

Tags matlab

3

Solutions

41

Size

3

Solutions

41

Size

Problem 1096. Largest Twin Primes

Created by: Des Mc Manus

Tags primes

4

Solutions

50

Size

4

Solutions

50

Size

Problem 525. Mersenne Primes

Created by: Drew Weymouth

Tags math, prime, integers

2

Solutions

42

Size

2

Solutions

42

Size

Problem 981. Find nearest prime number less than input number

Created by: Reza Ahmadzadeh

Tags math, prime numbers

3

Solutions

47

Size

3

Solutions

47

Size

Problem 896. Sophie Germain prime

Created by: Aurelien Queffurust

Tags prime, primes, sophie germain

4

Solutions

30

Size

4

Solutions

30

Size

Problem 1095. Circular Primes (based on Project Euler, problem 35)

Created by: James

Tags primes, projecteuler, circular reasoning

2

Solutions

100

Size

2

Solutions

100

Size

Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

1

Solution

43

Size

1

Solution

43

Size

Problem 534. Find best domino orientation

Created by: Doug Hull

Tags contest

2

Solutions

129

Size

2

Solutions

129

Size

Problem 520. Choose the best fitting dominoes

Created by: Doug Hull

Tags contest, poor_test_suite

6

Solutions

290

Size

6

Solutions

290

Size

Problem 492. Find best placement for ordered dominoes (harder)

Created by: Doug Hull

Tags contest

3

Solutions

99

Size

3

Solutions

99

Size

Problem 487. Find perfect placement of non-rotating dominoes (easier)

Created by: Doug Hull

Tags contest

1

Solution

79

Size

1

Solution

79

Size

Problem 470. Scoring for oriented dominoes

Created by: Doug Hull

Tags contest

3

Solutions

65

Size

3

Solutions

65

Size

Problem 858. Permute diagonal and antidiagonal

Created by: Jean-Marie Sainthillier

Tags matrix, diag

2

Solutions

105

Size

2

Solutions

105

Size

Problem 1129. Reverse the elements of an array

Created by: HARISANKAR PS

Tags array reverse

2

Solutions

13

Size

2

Solutions

13

Size

Problem 1042. Operate on matrices of unequal, yet similar, size

Created by: J-G van der Toorn

Tags repmat, elementare operations, ops

4

Solutions

58

Size

4

Solutions

58

Size

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

Created by: Jan Orwat

Tags sequences, fibonacci, recurrence

3

Solutions

106

Size

3

Solutions

106

Size

Problem 44311. Number of Even Elements in Fibonacci Sequence

Created by: Mehmet OZC

Tags fibonacci, cody5, big number

5

Solutions

14

Size

5

Solutions

14

Size

Problem 42340. Fibonacci Decomposition

Created by: Ned Gulley

Tags fibonacci

2

Solutions

78

Size

2

Solutions

78

Size

Problem 44481. How many Fibonacci numbers?

Created by: Bob Tivnan

Tags integers, fibonacci, #easy

1

Solution

58

Size

1

Solution

58

Size

Problem 1946. Fibonacci-Sum of Squares

Created by: Chris Cleveland

Tags fibonacci, sum of squares

1

Solution

52

Size

1

Solution

52

Size

Problem 798. Rotate input square matrix 90 degrees CCW without rot90

Created by: Christopher

Tags matrix manipulation

3

Solutions

45

Size

3

Solutions

45

Size

Problem 796. Removing rows from a matrix is easy - but what about inserting rows?

Created by: Dirk Engel

Tags matrix manipulation

11

Solutions

165

Size

11

Solutions

165

Size

Problem 794. Matrix with different incremental runs

Created by: Aurelien Queffurust

Tags matrix manipulation, increment

1

Solution

56

Size

1

Solution

56

Size

Problem 792. Set some matrix elements to zero

Created by: Aurelien Queffurust

Tags indexing, matrix

5

Solutions

41

Size

5

Solutions

41

Size

Problem 611. surrounded matrix

Created by: Grzegorz Knor

Tags matrices

1

Solution

54

Size

1

Solution

54

Size

Problem 545. Flip the main diagonal of a matrix

Created by: Bruce Raine

Tags magic, diagonal

3

Solutions

36

Size

3

Solutions

36

Size

Problem 497. Make an awesome ramp for a tiny motorcycle stuntman

Created by: Stephen

Tags stunt ramp

1

Solution

43

Size

1

Solution

43

Size

Problem 413. Back to basics 23 - Triangular matrix

Created by: Alan Chalker

Tags matrices, basic matlab, basics

1

Solution

37

Size

1

Solution

37

Size

Problem 411. Back to basics 21 - Matrix replicating

Created by: Alan Chalker

Tags matrices, basics

1

Solution

20

Size

1

Solution

20

Size

Problem 375. N-Dimensional Array Slice

Created by: @bmtran (Bryant Tran)

Tags indexing

6

Solutions

52

Size

6

Solutions

52

Size

Problem 300. Remove NaN ?

Created by: Julio

Tags matrix, logical

4

Solutions

23

Size

4

Solutions

23

Size

Problem 112. Remove the air bubbles

Created by: Ned Gulley

Tags matrix manipulation, matrix

3

Solutions

55

Size

3

Solutions

55

Size

Problem 2177. Rainbow matrix

Created by: Simon

Tags matrix

1

Solution

109

Size

1

Solution

109

Size

Problem 795. Joining Ranges

Created by: Dirk Engel

Tags sorting, matrix manipulation, numeric inputs

4

Solutions

67

Size

4

Solutions

67

Size

Problem 830. Fill a zeros matrix

Created by: Aurelien Queffurust

Tags logical operations

4

Solutions

52

Size

4

Solutions

52

Size

Problem 2342. Numbers spiral diagonals (Part 2)

Created by: Jean-Marie Sainthillier

Tags primes, project euler, spiral

4

Solutions

65

Size

4

Solutions

65

Size

Problem 2340. Numbers spiral diagonals (Part 1)

Created by: Jean-Marie Sainthillier

Tags primes, project euler, spiral

2

Solutions

189

Size

2

Solutions

189

Size

Problem 1286. MatCAT - Reconstruct X from Its X-rays

Created by: Ned Gulley

Tags matrices

1

Solution

78

Size

1

Solution

78

Size

Problem 52614. Easy Sequences 12: 50th Prime

Created by: Ramon Villamangca

Tags easy, sequences, primes

46

Solutions

105

Size

46

Solutions

105

Size

Problem 44080. Construct a "diagAdiag" matrix

Created by: Vinod Kumar Singla

Tags vectors, indexing

4

Solutions

132

Size

4

Solutions

132

Size

Problem 52609. Easy Sequences 11: Factorial Digits without Trailing Zeros

Created by: Ramon Villamangca

Tags easy, sequences, number theory

17

Solutions

69

Size

17

Solutions

69

Size

Problem 68. Kaprekar Steps

Created by: Cody Team

Tags matlab, lookup table, poor_problem_statement

1

Solution

104

Size

1

Solution

104

Size

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

Created by: Cody Team

Tags data cleaning, average

5

Solutions

65

Size

5

Solutions

65

Size

Problem 55. Counting Sequence

Created by: Cody Team

Tags encoding

3

Solutions

73

Size

3

Solutions

73

Size

Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

Tags numbers, number theory, sequence

25

Solutions

59

Size

25

Solutions

59

Size

1 – 50 of 267