Problems

1 – 21 of 21

Problem Title Likes Solvers Difficulty

Problem 44402. Horizontal matrix sort

Created by: Shaul Salomon

Tags matrices, sort, 22105

309

177

Problem 45171. Squares in Squares - Concentric Squares

Created by: Reece Blunt

Tags matrices, matrix, zeros

Problem 512. Spot the rectangle

Created by: Ned Gulley

Tags matrices, 17x17

Problem 514. Spot the rectangle (Part 2)

Created by: Ned Gulley

Tags matrices, 17x17

Problem 14. Find the numeric mean of the prime numbers in a matrix.

Created by: Cody Team

Tags easy, matrices

7270

Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

11340

Problem 611. surrounded matrix

Created by: Grzegorz Knor

Tags matrices

827

Problem 32. Most nonzero elements in row

Created by: Cody Team

Tags matrices

6172

Problem 2303. Compute Hamming distances between each pair of rows from two input matrices

Created by: Ryszard Maciol

Tags matrices, hamming distance, metric space

Problem 45402. Find an overlap in the cleaning schedule of two tank reactors

Created by: Karl Ezra Pilario

Tags matrices, lcm, chemical engineering

Problem 44063. Make a rainbow matrix (follow-up to checkerboard matrix)

Created by: Jihye Sofia Seo

Tags matrices, square

Problem 312. Better bullseye matrix

Created by: Alan Chalker

Tags matrices

196

Problem 44467. Product of Each Column

Created by: Shaul Salomon

Tags matrices, 22105

377

Problem 11. Back and Forth Rows

Created by: Cody Team

Tags matrices

6298

Problem 44469. Diagonal Pattern

Created by: Shaul Salomon

Tags matrices, loops, 22105

383

Problem 4. Make a checkerboard matrix

Created by: Cody Team

Tags matrices, square

176

13348

Problem 18. Bullseye Matrix

Created by: Cody Team

Tags matrices

4464

1 – 21 of 21

Trial software

Difficulty Rating

Problem Groups

Problems

Problem 44402. Horizontal matrix sort

Problem 44496. vector indexes for a matrix

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

Problem 45172. Cross ("+") flag returns

Problem 44446. Add a vector to a matrix

Problem 45171. Squares in Squares - Concentric Squares

Problem 512. Spot the rectangle

Problem 514. Spot the rectangle (Part 2)

Problem 14. Find the numeric mean of the prime numbers in a matrix.

Problem 33. Create times-tables

Problem 611. surrounded matrix

Problem 32. Most nonzero elements in row

Problem 2303. Compute Hamming distances between each pair of rows from two input matrices

Problem 45402. Find an overlap in the cleaning schedule of two tank reactors

Problem 44063. Make a rainbow matrix (follow-up to checkerboard matrix)

Problem 312. Better bullseye matrix

Problem 44467. Product of Each Column

Problem 11. Back and Forth Rows

Problem 44469. Diagonal Pattern

Problem 4. Make a checkerboard matrix

Problem 18. Bullseye Matrix