# Problems

1 – 50 of 130
 Problem Title Likes Solvers Difficulty

#### Problem 45489. Top layer of a 3D pyramid

Created by: Fazlul Haque

Tags geometry, matrix, 3d

1

17

#### Problem 45491. cross-section of 3D pyramid

Created by: Fazlul Haque

Tags geometry, matrix, 3d

1

17

#### Problem 45221. cofactor matrix

Created by: Asif Newaz

1

19

#### Problem 44666. Draw 'O' !

Created by: Majid Farzaneh

Tags matrix, o, draw

7

600

#### Problem 42697. sparse_matrix

Created by: Abdullah Caliskan

Tags matrix

0

40

#### Problem 46621. One-hot encoding

Created by: Asif Newaz

Tags matrix

2

31

#### Problem 44672. Draw 'C'.

Created by: Majid Farzaneh

Tags matrix, c, draw

10

756

#### Problem 45872. Remove the row average (★★★)

Created by: Anirban Pal

Tags matrix

2

33

#### Problem 44679. Draw 'E'

Created by: Majid Farzaneh

Tags matrix, e, draw

14

768

#### Problem 44681. Draw 'H'

Created by: Majid Farzaneh

Tags matrix, draw, h

9

782

#### Problem 1158. Sum the elements in either diagonal of a square matrix

Created by: Tom Holz

2

195

Created by: goc3

1

16

#### Problem 43027. Gaussian elimination

Created by: Jamil Kasan

8

10

#### Problem 43193. Where is 1?

Created by: Jang geun Choi

Tags matlab, find, matrix

4

35

#### Problem 44477. Find left eigenvector of row stochastic matrix

Created by: Martin C.

0

10

#### Problem 43226. Get 1-4-3-4-4

Created by: Jamil Kasan

8

87

#### Problem 44686. Draw 'J'

Created by: Majid Farzaneh

Tags matrix, character, j

7

748

#### Problem 49622. Matrix Pattern 7

Created by: Doddy Kastanya

0

39

#### Problem 42646. Matrix FUN

Created by: Manish Joshi

3

140

#### Problem 2799. Multiply Column

Created by: Abdullah Caliskan

2

39

#### Problem 44888. Given a matrix A (size m x n) create a matrix B which consists of matrix A sorted in descending order by columns and then by rows.

Created by: Yoav Shallev

1

135

#### Problem 44680. Draw 'F'

Created by: Majid Farzaneh

Tags matrix, f, draw

6

659

#### Problem 42083. Ring Matrix

Created by: Mayuri Patil

Tags matrix, odd, ring

1

26

#### Problem 44889. Given a matrix A return a vector of the product of the elements in each column using a loop without using prod.

Created by: Yoav Shallev

Tags matrix, basics

0

139

#### Problem 2130. Orthonormal matrix

Created by: Abdullah Caliskan

Tags matrix

1

137

#### 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

195

Created by: goc3

1

89

#### Problem 44530. Are you more familiar with iteration methods or Linear Algebra? Let's see together.

Created by: Riccardo Dessì

Tags math, basic, matlab

1

22

#### Problem 51287. Square Patterns in a square matrix

Created by: Sumi Suresh

Tags matrix

0

7

#### Problem 45177. Summing Rows and Columns

Created by: Asif Newaz

Tags matrix

1

38

#### Problem 43026. Determinant of a 3x3 Matrix

Created by: Jamil Kasan

12

99

#### Problem 44673. Draw 'D'.

Created by: Majid Farzaneh

Tags matrix, d, draw

5

660

#### Problem 2144. interesting center of magic matrix

Created by: Koteswar Rao Jerripothula

Tags matrix

1

91

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

Created by: Jesús Zambrano

0

21

#### Problem 54119. Create the Ulam spiral

Created by: Hugo

Tags prime, matrix

0

10

Created by: Sibi

Tags matrix

0

10

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

Created by: Pritesh Shah

4

687

#### Problem 49627. Matrix Pattern 8

Created by: Doddy Kastanya

0

37

#### Problem 1229. Determine the number of odd integers in a vector

Created by: Jeremy

5

553

#### Problem 44656. Draw a 'N'!

Created by: Majid Farzaneh

Tags matrix, draw, n

7

776

#### Problem 1636. ZigZag matrix with reflected format

Created by: Suman Saha

Tags matrix

4

145

#### Problem 44646. Draw a 'Z'.

Created by: Majid Farzaneh

Tags matrix, character, z

10

597

#### Problem 1430. Create an n-by-n null matrix and fill with ones certain positions

Created by: Daniel Pereira

6

452

4

62

#### Problem 2351. Replace Nonzero Numbers with 1

Created by: Vishal

Tags matrix

6

281

#### Problem 44682. Numbers on 7-segment

Created by: Majid Farzaneh

3

68

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

Created by: Mehmet OZC

1

46

Created by: Hans

3

23

#### Problem 1725. Diagonal & Anti-Diagonal Matrix: Easy

Created by: Suman Saha

Tags easy, matrix

0

85

#### Problem 2177. Rainbow matrix

Created by: Simon

Tags matrix

3

113

1 – 50 of 130