# Problems

1 – 50 of 77
 Problem Title Likes Solvers Difficulty

4

75

#### Problem 44419. 対称で、n*2n のサイズの行列を作成しましょう

Created by: mizuki

4

177

#### Problem 876. Sum the entries of each column of a matrix which satisfy a logical condition.

Created by: Ken Deeley

3

145

#### Problem 1759. Find same numbers touching each other...

Created by: Chris E.

0

50

#### Problem 42646. Matrix FUN

Created by: Manish Joshi

3

140

#### Problem 44887. Given a matrix A (size m x n) create a matrix B (size m+2 x n+2) which consists of matrix A surrounded by zeros. See Example below:

Created by: Yoav Shallev

1

140

#### Problem 794. Matrix with different incremental runs

Created by: Aurelien Queffurust

4

312

#### Problem 2669. Assign matrix rows/columns to separate variables

Created by: Matthew Eicholtz

2

30

#### Problem 44854. Alternating 1´s and 0´s in a matrix

Created by: Jesús Zambrano

0

21

#### Problem 1853. Enlarge array

Created by: Matthew Eicholtz

5

183

#### Problem 42876. Rotate Matrix @180 degree

Created by: Pritesh Shah

4

622

4

61

#### Problem 1719. Dice face matrix!

Created by: Chris E.

4

77

#### Problem 2668. Assign matrix elements to separate variables

Created by: Matthew Eicholtz

2

39

#### Problem 42763. Fill the Matrix - 2

Created by: Mehmet OZC

1

45

#### Problem 42854. Crunch that matrix!

Created by: James

1

76

#### Problem 1852. Repeat middle rows and columns of an array

Created by: Matthew Eicholtz

3

31

#### Problem 43027. Gaussian elimination

Created by: Jamil Kasan

8

11

#### Problem 45421. Abelian Sandpile - 02

Created by: Asif Newaz

0

14

#### Problem 47164. Red Cross ❌

Created by: Abhishek Sharma

0

21

#### Problem 45271. Calculate triangle area

Created by: Jean Baptiste Joseph

1

12

#### Problem 818. Change a specific color in an image

Created by: Matthew Eicholtz

3

62

#### Problem 2644. The Ulam Matrix

Created by: Giuseppe Cardillo

4

40

#### Problem 43966. Matrix to 3-Column Matrix

Created by: Abdullah Caliskan

1

46

#### Problem 2493. Must be in the front row...

Created by: James

3

97

#### Problem 44443. Matrix to vector transformation

Created by: jean claude

1

33

#### Problem 1961. Finding neighbors of [-1:1] in a matrix....

Created by: Chris E.

2

62

#### Problem 2456. remove single elements

Created by: rifat

1

69

#### Problem 42858. Block average ignoring NaN values

Created by: Peng Liu

2

31

#### Problem 45399. ZigZag - 01

Created by: Asif Newaz

0

29

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

Created by: Christopher

3

433

#### Problem 46716. Matrix with increasing numbers (★★★★)

Created by: Anirban Pal

1

30

#### Problem 45400. Fault in our Stars - 01

Created by: Asif Newaz

1

15

#### Problem 2587. Find indices of diagonal elements

Created by: Jean-Marie Sainthillier

2

59

#### Problem 2405. The Number of Ways

Created by: Abdullah Caliskan

1

20

#### Problem 2592. LocateMembership | Membership of Matrix in another matrix

Created by: Vishal

3

19

#### Problem 42634. Minimum of each diagonal

Created by: Matthew Eicholtz

2

50

#### Problem 45403. ZigZag - 03

Created by: Asif Newaz

3

16

#### Problem 45420. Abelian Sandpile - 01

Created by: Asif Newaz

1

13

#### Problem 45878. Get the elements of diagonal and antidiagonal for any m-by-n matrix (★★★★)

Created by: Anirban Pal

0

24

#### Problem 45172. Cross ("+") flag returns

Created by: Kiran Ramsaroop

0

16

#### Problem 780. Give a matrix that matches itself when rotated

Created by: Ned Gulley

2

12

#### Problem 45839. Column Removal (★★★)

Created by: Anirban Pal

1

90

#### Problem 1699. Find last zero for each column

Created by: Matthew Eicholtz

10

334

#### Problem 44950. Calculate Inner Product

Created by: Pooja Lalan

32

4379

#### Problem 1748. Ripping numbers apart!

Created by: Chris E.

3

83

#### Problem 2648. Ulam spiral 2: The revenge

Created by: Giuseppe Cardillo

2

22

#### Problem 42761. Fill the matrix - 1

Created by: Mehmet OZC

3

50

#### Problem 45815. Fill a zeros matrix (★★★★★)

Created by: Anirban Pal

1

28

#### Problem 840. SET (the card game)

Created by: Matthew Eicholtz

3

49

1 – 50 of 77