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Matrix (2D arrays)
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Matrix (2D arrays)
Rows, columns, spirals and 2D grids. 19 problems · Intermediate level.
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19 problems
Traversal
✓
Sum of the Border Elements
easy
✓
Spiral Order of a Matrix
medium
basic operations
✓
Transpose of a Matrix
easy
✓
Sum of the Diagonals of a Square Matrix
easy
✓
Row Sums and Column Sums
easy
✓
Rotate a Matrix by 90 Degrees (Clockwise)
medium
properties
✓
Symmetric Matrix Check
easy
✓
Toeplitz Matrix Check
easy
row column logic
✓
Lucky Numbers in a Matrix
easy
in place updates
✓
Set Matrix Zeroes
medium
simulation
✓
Game of Life: Next Generation
medium
traversals
✓
Diagonal Traverse
medium
staircase search
✓
Count Negatives in a Sorted Matrix
medium
grid dp
✓
Largest Square of Ones
medium
✓
Minimum Falling Path Sum
medium
spiral
✓
Generate a Spiral Matrix
medium
matrix multiplication
✓
Multiply a Square Matrix by Itself
medium
prefix sums
✓
Submatrix Sum Queries
medium
binary search on answer
✓
Median of a Row-wise Sorted Matrix
hard