Implement Dijkstra's algorithm: This question is commonly asked by companies like Google, Amazon, Microsoft, and Facebook.

Implement Kruskal's algorithm: This question is commonly asked by companies like Amazon, Microsoft, and Google.

Implement Prim's algorithm: This question is commonly asked by companies like Amazon, Microsoft, and Google.

Implement Breadth First Search (BFS): This question is commonly asked by companies like Amazon, Google, and Facebook.

Implement Depth First Search (DFS): This question is commonly asked by companies like Amazon, Google, and Facebook.

Find the shortest path between two nodes in a graph: This question is commonly asked by companies like Amazon, Google, and Microsoft.

Determine whether a graph is bipartite or not: This question is commonly asked by companies like Amazon, Google, and Facebook.

Detect a cycle in a directed graph: This question is commonly asked by companies like Amazon, Google, and Microsoft.

Count the number of connected components in an undirected graph: This question is commonly asked by companies like Amazon, Google, and Facebook.

Find the minimum spanning tree of a graph: This question is commonly asked by companies like Amazon, Microsoft, and Google.

Topological sorting of a directed acyclic graph: This question is commonly asked by companies like Amazon, Google, and Facebook.

Shortest path between all pairs of nodes in a weighted graph: This question is commonly asked by companies like Amazon, Microsoft, and Google.

Clone a directed graph: This question is commonly asked by companies like Amazon, Google, and Microsoft.

Check if there is a path between two nodes in a graph: This question is commonly asked by companies like Amazon, Google, and Facebook.

Find the diameter of a tree or graph: This question is commonly asked by companies like Amazon, Google, and Microsoft.

Find the strongly connected components of a directed graph: This question is commonly asked by companies like Amazon, Google, and Facebook.

Convert a graph to its complement: This question is commonly asked by companies like Amazon, Google, and Microsoft.

Find the maximum flow in a network flow graph: This question is commonly asked by companies like Amazon, Microsoft, and Google.

Find the minimum cut in a network flow graph: This question is commonly asked by companies like Amazon, Microsoft, and Google.

Find the kth shortest path in a graph: This question is commonly asked by companies like Amazon, Google, and Microsoft.