Adjacency matrix of an undirected graph is given. Return the number of connected components in the graph.
Test case 2 matrix is not symmetrical. Can't be the adjacency matrix of an undirected graph.
yes.. fixed it
First N Perfect Squares
Back to basics 1 - Saving
How many trades represent all the profit?
Sum the numbers on the main diagonal
Generate Square Wave
Beauty of Parentheses
longest common substring : Skipped character version
longest common semi-substring
Yet Another Path Finder
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