11 lessons · DSA pattern
Matrix
A matrix is a 2D array. You've used 1D arrays, hashmaps, and DFS/BFS — matrix problems combine those tools over a grid. You already learned: Arrays — 1D it…
Start learning →A matrix is a 2D array. You've used 1D arrays, hashmaps, and DFS/BFS — matrix problems combine those tools over a grid. You already learned: Arrays — 1D it…
Start learning →