Greedy Algorithms Questions
The role of an optimal substructure in a greedy algorithm is to ensure that the optimal solution to a problem can be constructed from optimal solutions to its subproblems. In other words, the problem can be solved by making a series of locally optimal choices, which will ultimately lead to a globally optimal solution. The optimal substructure property allows the greedy algorithm to make these locally optimal choices at each step, without needing to reconsider previous choices.