#matrices

Copy a rectangle within a 2D array in place
CodingWaymo
▲ 00 solutions
2D max pooling that also returns where each maximum came from
CodingWaymo
▲ 00 solutions
Leftmost column with a one in a row-sorted binary matrix
CodingUber
▲ 00 solutions
Update a grid of firing neurons
CodingScale AI
▲ 00 solutions
Rank transform of a matrix with distinct values
CodingGlean
▲ 00 solutions
Validate a tic-tac-toe board state
CodingSnowflake
▲ 00 solutions
Rotate a 3x3 grid of digits by 180 degrees
CodingMicrosoft
▲ 00 solutions
Toeplitz matrix
CodingMeta
▲ 00 solutions
Kth smallest element in a sorted matrix
CodingMeta
▲ 00 solutions
Sparse matrix multiplication
CodingMetaNetflix
▲ 00 solutions
Diagonal traversal of a matrix
CodingMeta
▲ 00 solutions
Spiral matrix
CodingMetaMicrosoft
▲ 00 solutions
Longest increasing path in a matrix
CodingMeta
▲ 00 solutions
Matrix transforms and what eigenvalues mean
CodingGoogle
▲ 00 solutions
Game of Life, updated in place
CodingGoogle
▲ 00 solutions
Tic-tac-toe with K players
CodingGoogle
▲ 00 solutions
Rotate an image matrix 90 degrees in place
CodingApple
▲ 00 solutions
Multiply two sparse matrices
CodingApple
▲ 00 solutions
Valid Sudoku in one pass
CodingAmazon
▲ 00 solutions
Rotate a matrix by 90 degrees
CodingAmazon
▲ 00 solutions