What is the Complexity of greedy algorithm?

The complexity of a greedy algorithm typically depends on the specific problem it is solving and the way the algorithm is implemented. In many cases, greedy algorithms operate in O(n log n) time due to the need to sort elements, such as in the case of the Huffman coding algorithm. However, for simpler problems, the time complexity can be as low as O(n), especially if the algorithm makes a single pass through the data. Ultimately, the complexity can vary, so it's essential to analyze the particular algorithm and problem context.