# Problems

1 – 50 of 87
 Problem Title Likes Solvers Difficulty

#### Problem 44739. Return all matrix elements except elements on diagonal

Created by: Suraj Gurav

1

44

#### Problem 44430. remove every row&col for every nan

Created by: jean claude

0

34

#### Problem 2701. Go to the head of the class!

Created by: James

1

101

#### 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

144

#### 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

5

219

#### Problem 42646. Matrix FUN

Created by: Manish Joshi

3

143

4

65

#### Problem 1719. Dice face matrix!

Created by: Chris E.

4

86

#### Problem 56453. Multiply each matrix element by its row index and add its column index.

Created by: Stefan Abendroth

1

11

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

Created by: Aurelien Queffurust

4

328

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

Created by: Matthew Eicholtz

2

40

#### Problem 45417. Fault in our Stars - 02

Created by: Asif Newaz

2

12

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

Created by: Pritesh Shah

5

791

#### Problem 2045. Only once: cleaning up your columns

Created by: J-G van der Toorn

1

30

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

Created by: Matthew Eicholtz

2

34

#### Problem 45421. Abelian Sandpile - 02

Created by: Asif Newaz

0

15

#### Problem 47164. Red Cross ❌

Created by: Abhishek Sharma

0

22

#### Problem 42854. Crunch that matrix!

Created by: James

1

77

#### Problem 56180. Boustrophedon

Created by: Ben Placek

1

36

#### Problem 2644. The Ulam Matrix

Created by: Giuseppe Cardillo

4

41

#### Problem 44443. Matrix to vector transformation

Created by: jean claude

1

34

#### Problem 45271. Calculate triangle area

Created by: Jean Baptiste Joseph

1

12

#### Problem 54715. Weird Diagonal Matrix!!

Created by: Nayeb Hasin

0

16

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

Created by: Matthew Eicholtz

3

65

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

Created by: Mehmet OZC

1

48

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

Created by: Jesús Zambrano

0

22

#### Problem 1853. Enlarge array

Created by: Matthew Eicholtz

5

200

#### Problem 45399. ZigZag - 01

Created by: Asif Newaz

0

30

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

Created by: James

3

106

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

Created by: Anirban Pal

1

31

#### Problem 2456. remove single elements

Created by: rifat

1

80

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

Created by: Vishal

3

20

#### Problem 45403. ZigZag - 03

Created by: Asif Newaz

3

18

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

Created by: Matthew Eicholtz

3

32

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

Created by: Jean-Marie Sainthillier

2

60

#### Problem 45420. Abelian Sandpile - 01

Created by: Asif Newaz

1

14

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

Created by: Asif Newaz

1

15

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

Created by: Christopher

3

444

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

Created by: Kiran Ramsaroop

0

16

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

Created by: Abdullah Caliskan

1

47

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

Created by: Chris E.

2

68

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

Created by: Anirban Pal

1

96

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

Created by: Peng Liu

2

32

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

Created by: Anirban Pal

0

26

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

Created by: Ned Gulley

2

12

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

Created by: Mehmet OZC

3

53

#### Problem 44950. Calculate Inner Product

Created by: Pooja Lalan

36

4931

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

Created by: Matthew Eicholtz

10

377

#### Problem 45842. Swap the first and last columns (★★)

Created by: Anirban Pal

0

101

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

Created by: Giuseppe Cardillo

2

22

1 – 50 of 87